When playing 
don't forget you can autoattack.
When playing 
don't forget you'll live longer simply fighting.
When playing {a melee champion} don't forget orbwalking still works.
When playing {in lane} don't forget minions are a weapon, too.
When playing 
don't forget to laugh, having fun is what the game is about.
When playing 
don't forget your laugh does no damage, and can get you killed because it makes you stop moving.
When playing 
don't forget you are not Trick2g.
When playing 
, remember to fix her icon. (Orianna)
WHEN PLAYING 
DON'T FORGET TO UPGRADE YOUR ULTIMATE
When playing Yorick, remember your name.
When playing 
dont forget that you don't need to build defense, your lane opponent does.
When playing 
don't forget to laugh after every autoattack to tilt the enemy into oblivion. #ProTip
When playing 
remember to bite the pillow when 
shows up.
When playing 
, don't forget you have ults other than your big turret.
Don't forget to take a towel.
when playing 
don't forget you have a cigar
oh wait...
When playing {an adc} don't forget to...
STAND BEHIND 
!
When playing Rengar or Aatrox, remember to disable my mains riot!
When playing 
don't forget to d/c
you dont have to laugh as singed, fling someone and you laugh on your own :D
Your ult is more than just evolution points
Seriously, I was spectating a few of one of my friend's games and he didn't use it. I asked him why not and he said because he already used to evolution point. I took him into a custom game and showed him how the stealth helps him murder auto attack reliant champions that survive Kha's initial burst. His mind was blown.
When playing 
remember that Gems are truly outrageous.
When you play {Top/Jungle/Mid/ADC/Support} don't forget to ward. 
[slayer-jinx-catface]
When you play 
, don't forget to type "Mordekaiser es numero uno" once in a while in all chat, especially after getting double kill from getting ganked.
When playing 
, pick up your blobs. Unless doing so will cause you to lose more hp than you gain.
When playing , don't forget your e drops a blob for every champion hit.
When playing , remember that all 4 of your emotes look super goofy when spammed.
When playing , remember that your passive turns you into a walking bait; don't be afraid to go ham.
Hey guys, guess what Champion I main.
remember summoners, F is for Flash
Remember summoners, D is for if you don't care and don't want to waste your untargeted blink while trying to ping XD
when playing 
, never forget to spam w wherever you go. it's free ms!
when playing 
, never forget to geometry
That's a lie OP, Singed's laugh actually deals 2000 Psyche damage to your lane opponent.
When playing 
don't forget 
When laning against Malz, don't forget to pick GP.
Orbwalking?
