Who said "I don't know much, but I know myself pretty well."?

This quote is attributed to Vincent Vega.

I don't know much, but I know myself pretty well. - Vincent Vega

"I don't know much, but I know myself pretty well."

Vincent Vega

"I'm gonna go take a shit. When I come back, if the dope is still here, it ain't gonna mean nothing."

"You know what they call a Quarter Pounder with Cheese in Paris?"

"That ain't no joke. That's just the way it is."

"I'm gonna take a shower. When I come back, we'll talk about this some more."