[Barney pats Ted on the back]
Ted: Ow. Why did that hurt so...? [Ted goes into the bathroom] Oh, my God! [returns] I have a tattoo.
Barney: Oh, that's not a tattoo. That, dear boy, is a tramp stamp.
Ted: Tramp stamp?
Barney: You know, a ho tag. Ass antlers. A Panama City license plate.