MGS3 has the best ones. You just have to call everyone at the stupidest of times.

Sigint: Ah, you're wearing the chocolate chip pattern.
Snake: Chocolate chip? You mean this camouflage?
Sigint: Yeah.
Snake: I've never heard of a camo pattern called that before...
Sigint: Yeah, I know. I just thought it up right now. The chocolate chip
pattern is probably designed to provide cover in a desert environment. It should work best against a sandy or rocky background.
Snake: Make sense. But why'd you call it chocolate chip?
Sigint: 'Cause that's what it reminds me of.
Snake: What?
Sigint: Those little round cookies the major is always snackin' on.
Zero: They're not cookies. They're scones.
Sigint: Major!
Zero: And it's not a snack. It's afternoon tea.
Sigint: Snack, tea, same thing.
Zero: No, it's not! Look here, afternoon tea is a fine old English tradition.
Sigint: Uh oh. Here we go again. Talk to you later, Snake.
Zero: The origins of afternoon tea go back to the Victorian Era. Anna Maria, the seventh Duchess of Bedford, was...