A woman is picked up by a basketball player in a bar.  They like each other
 and she goes back with him to his hotel room.  He removes his shirt and she
 sees that on his arm is a tattoo which reads "Reebok."  She thinks that's a
 bit odd and asks him about it.  He says, "When I play basketball, the cameras
 pick up the tattoo and Reebok pays me for the advertisement."  
 A bit later, his pants are off and she sees "Puma" tattooed on his leg.  He
 gives the same explanation for the unusual tattoo.  Finally, the underwear
 comes off and she sees the word "Aids" tattooed on his penis.
 She jumps back with shock, "I'm not going to do it with a guy who has Aids!"
 He says, "It's cool, baby. In a minute it's going to say Adidas."