What pick do you like to do that you enjoy, but know is not normally accepted or optimal or even good?
Example:
While it isn't meta, his earlygame is weak and many don't expect it to do well, I like to play Talon jungle because his ganks are fun and his late game terrifying to any team that can't protect their carries.
Twisted Fate support, because when my adc's death is inevitable I can just say: "Fuck it. I'm out." and tp away. Gives both my team and the other team a reasonable laugh, and I haven't had an adc who wasn't visibly amused by getting a support twisted fate. :D
...
Jungle Quinn.
Lee Sin waited for me at my red and I shat on him. GG.
jg. The sustains man. lvl 9, but you already heal 400...
AD 
top. PREPARE TO FACEROLL
Jungle
. Good sustain, good clear times, nice ganks with your E and ult. Also every time your ult is up its a free kill if you aren't stupid with aiming it.
AP Aatrox and ADC Kennen
It's not that far out of meta, but my guilty pleasure is playing Veigar mid. I play him whenever I want to ruin someone's day. By midgame I can EQW=Delete most midlaners and carries often without my ult. By lategame I only need to ult tanks and anyone stacking tons of MR. It's satisfying to watch a Yasou who's been trying to windwall your Q and R all game get stunned by your E and be helpless as I proceed to deal well over 1000 damage in the next moment. Or to "ragecage" a Lee Sin and watch him try to kick his way over to me only to stun himself and get nuked to oblivion. Or to 100-0 a carry from the bushes with my ult when I'm fed. That moment when you've been passively farming the first 10 minutes, and then you drop a ragecage and 100-40 pretty much anybody in mid. Then they have to recall and you get even more farm and AP. Then you do the same combo a minute after they come back and they die. Then you know that pretty much anybody you can kill with a combo and who doesn't buy health or MR you can kill anytime you want without a problem.
Basically, my guilty pleasure is playing Veigar when I want to be a bit of a dick, without being toxic. I never rage or talk on all-chat, I don't need to. I'm Veigar. They get the message.
Midlane malphite....faceroll troll XD
enemy team coming in to finish the nexus.
stealth
unstealth from behind
"IT'S ME!!!" 
it seems like they would immediately turn around and destroy me but they almost NEVER respond in time
I've been having a ton of fun as AD bruiser Malphite lately. I rush a Hydra and then build tanky... he can splitpush, 1v1 AND teamfight quite well.
Teemo. I love the rodent and his flexable build paths. My favorite build is bork and liandries into tank.
I think I've only played Twisted Fate as a support and I thought it would be a good idea and I think it could still work! He can poke well, has cc and if your adc or any other teammates go in you can ultimate in! But I'm pretty bad with Twisted Fate, I should probably play him more but I'm too scared to play him to get use to him because every time I do, I do pretty bad and I don't like pissing people off!
Also while it's pretty normal now, couple of years ago when I first started playing support I would love to go with zilean! People would harass me and tell me to get another support and when I tell them I didn't have another one, I would own the bot lane! I'll admit it's been awhile since I've played zilean support but it's too norm now!
mid lane is fun I like rushing mages while in stealth and they can only flee
support was pretty fun and I started to do more of it seeing as he has goodish cc and dmg kill lane is op
support had to be the funniest game ive ever played had my 2 trusty adc 
and
top lane seeing as i got destroyed every time i went bot always take 
for maximum fun
Blitzcrank top. But hey isn't he ment for top lane He sure is but nobody expects him (or the Spanish Inquisition) to go top lane so I don't get counter picked which makes it double fun
support, building 
and 
that's 69 MR reduction, AoE.
That's roughly 50% magic damage increase, for the entire team. No need for 
, go full AP.
I really liked to do this with old 
, 105 MR reduction tops. (upwards of 85% damage increase)
it does so much because reduction can go negative.
Or go team "What's MR?" 
and
Sad they reworked Soraka, or we'd reach 164 MR reduction.
, No one every expect the purple man to blink out of nowhere and gank them :). Sadly no one seems to accept the pick either seeing as his early jungle is sub par. It does get way better after level 6 though.
My wife loves AP 
, and is convinced there has to be a way to make it viable.
My favorite is AP 
mid. I build him as a bit of a spammy mage, rushing 
. There nothing like two shoting an enemy, or going dash-for-dash with another mobile champion, or laughing at the pathetic ultimate of an AD Ezreal on the other team.
Ii don't believe in "guilty pleasures" this is a video game its supposed to be all pleasure no guilt and and all fun ... so I only play my favorites no matter what mode i am playing from ranked to poro .
Top Lane AD assassin
+ 
+ 
+ 
+ 
+ 
So many lawls!
AP 
mid. Lot of people don't think he's viable after his ultimate was nerfed, but I still enjoy it.
AP janna used to be good. Then they gutted her base stats. Ap janna used to be good then they gutted her zeypher AP janna used to be good. then they left her Q bug that makes her Q fly into you and not deal damage/knock up targets moving at a certain move speed/angle to the tornado
god bless rito. Hating us janna players since her release. Fuck you AP janna we don't like wave clear champs garble garble garble!
adc thresh. if it doesn't fail horribly, it's pretty effective. if i make it to 5 items (including boots) i can typically chunk someone for 1800 mixed damage (before mitigation) with my first auto if it crits. the fact that his AA range is the same as the bork active is pretty nice. i will only do this with my friend playing blitz support. if done right, you can chunk the enemy for 200 before they can even respond at level 1.
Meow! =^.^=
Ideally in a silly costume.
When she's not banned...
