Last of the Independents Puns

So I was having a late dinner with my roommate on the last day of our reading break, and we ended up on the topic of historical literacy. This is what followed:

RM: "When was the Declaration of Independence signed?"

Me: "1776."

RM: "Yeah, but specifically what was it signed on?"

Me: "Uh, The Fourth of July?"

RM: "No, it was signed on paper."

Needless to say, I double-facepalmed and finished my shake with that weird feeling you get after such a joke.