How to trigger various champion mains
http://www.onetrick.biz/images/logoEMB.png
- Say Aatrox isn't viable
- play 
- "Good job playing the easiest champ in the game"
- Say there are no Galio mains
- It's not K
- Play a real villian 
- Take away cigar
-
"Let's count to five!"
- "Lee has no map awareness"
- "Nasus please come mid"
- "The Athens were glorious"
- "I can damage you"
- Nokay
- Kill Shyvanna if you know what I'm saying ey where are ya RaptorKarr? (Also get first blood on them)
_Sion_ 
Sion mains are undoubtedly the best kind of main. Due to this, I decided to give Sion a border and an extra long and high quality explanation:
If you have ever been lucky enough to meet an... _exotic_ and _intelligent_ Sion main it will come to your attention that there is but one thing that gets under their skin more than anything else. Yes, miles worse than Teemo. Miles worse than Yasuo. You see, it is **calling Sion a juggernaut**. In case you were wondering, no. Sion is infact NOT a juggernaut. Rather he is a vanguard, the offensive breed of a tank. If you remain unconvinced, it is okay. That is why I am providing this link where Riot clearly states that Sion is infact a tank.
http://boards.na.leagueoflegends.com/en/c/developer-corner/3A5uuBw7-champion-subclass-list
- Ship someone other than TaricxEzreal
- Deny Urgot's true beauty
- Be their support
- Make a short joke
- Tell them that killing Harambe was the right move.
- Talk to them, ping them, take xp, don't give them red buff, don't give them blue buff, don't give them raptors, krugs, gromp, scuttle crab, or wolves, don't let them last hit all epic monsters, give them a suggestion, play League, don't let them last hit wards, don't camp them (if you're on their team), camp them (If you are on the enemy team), I could continue but we'd be here for hours and I don't want that to happen.
Anything I missed?
Stand in front of him.
Tell her to shave her legs. (Thorns Embrace joke)
Play
and make comments all game long about Senna.
Be his friend.
- Imply that he's supposed to be a Vanguard, or otherwise a straight tank.
Make a portal joke