They aren't really jokes but...

[Velocity]

...DAMN are they funny.

http://www.overheardinnewyork.com/

A few of my favorites:

Black guy #1: Yes, well, we look alike because we're fraternal twins.
Black guy #2: Yeah, you didn't know we were brothers?
White guy: Everyone said you guys were brothers, but I figured they meant 'brothas' and not actual brothers.
Black guy #1: Oh... Okay. Hey, look, we're at Shea.

Tourist: Excuse me, can I ask you a question? Where's the apple?
Cop: What?
Tourist: You know, the big one? [Cop stares at her, then shrugs and points arbitrarily down Broadway.] Thanks!

Three-year-old tripping as train leaves platform: Jesus Christ!
Mother: Derek! ... Did you learn that from church, or from when Mommy gets mad at Daddy?

[FalconZero]

I like them. They made me chuckle. 7/10

[Vermillion]

Heard them before.

[Migraine.]

You're right. They aren't really jokes.