Simple, just list a trollish build that couldn't possibly work in a serious game, then the poster below you has to find a way for it to work (don't need to use it in game, just list a reason on how it could be useful), And then post your own silly build.
This was extremely popular on the old forums also. http://forums.na.leagueoflegends.com/board/showthread.php?t=2522628
And now to begin. AP Sivir
Support
Support 
Taking Magic Pen will increase the damage of his passive. It will do very good DOT
ADC 
13 3 25 with Full Tank 
last night.
http://matchhistory.na.leagueoflegends.com/en/#match-details/NA1/1638724209/46146879?tab=builds
ADC Azir would have amazing chases/escapes and high attack speed for his soldiers. i would E to knock up the enemy laners and use the knockup time to unleash basic attacks the likes have never been seen
AD Bruiser 
I have entire team comp for you:
AD 
AP 
Support 
Jungle 
Tank 
Tank
Jungle
AP
Support
ADC 
Now nobody can kill Satan gg
Instant cleartimes, unrivaled ganks
Lich bane instagibbs
"Here let me get the entire enemy team to 5hp so the adc can clean up."
Dueling master
Jungle
AP Jungle
Jungle
Ridiculous Dmg on your Q and you'll probs have 40% CDR so it'll be coming out every 5 seconds - ult for chasing - w spell shield - basically a super strong AOE AP caster.
ADC 
Jungle
Jungle
ADC
APC
AD Tank
Try those.
AP 
