Pootis

[LastPayLoad0]

Any one know:
1 Pootis
2 Pop it don't drop it
3 Crash zone
4 spycrab
5 Its just a little scratch
6 Hey, catch me later - I'll buy you a beer!
7 HECU
8 Eat this, you outer-space octopus!
9 HEV
10 Do you know who ate all the donuts?
Do not google, if you don't know you don't know it.

[kittymeowkub]

HEV is from Half Life, I think. I don't know the rest.

[SteveTheNerd]

Pootis is from Team Fortress Two, derived from the Heavy saying "Put dispenser here."

[LastPayLoad0]

Your both right :)
most are from half life

[HappyBurgerMan]

Spycrab and Pop it Don't Drop It are also from Team Fortress 2. Spycrab comes from a "bug" that will make the spy look like a crab when he opens the disguise menu, crouches, and looks up, and Pop it Don't Drop It is a phrase telling medics to pop ubercharges instead of dropping them.