Bulletstorm. Best FPS this gen. Yeah. I said it.

[LordMatrix]

Ajescent said:

kowenicki said:

I mean come on... this is pure gaming gold.

Trishka: "If you follow me I WILL kill your dicks"

Gray: "What does that even mean? You'll kill our dicks? Oh yeah well... I'll kill your dick, how about that huh?" 

or

"Got myself a bottle of scotch and I’m violently fiddling with my balls in anticipation for your arrival"

or

"I named him Waggleton P. Tallylicker, but I never got the chance to tell him. He will be remembered."

or

"Want to make out? In a totally hetero way?"
"Hah!"
"That was a nervous chuckle. Either your human side gets the joke, or your robot side likes the way I look in these pants."
"Perhaps a little of both."

Win

The dialog in Bulletstorm cracked me up. Some of the funniest dialog I have seen in a game in years IMO.