ghost pubes

The slight itching sensation in the back of your throat that occurs long after you've had oral sex with someone, particularly after performing oral sex on a woman - you've washed all the pubic hairs out of your mouth, and you're sure they're all gone, but you still swear you can feel a pubic hair somewhere in your throat.

"Dude, I totally brushed my teeth and gargled with mouthwash after I went down on Susie this morning, but I swear there's still one or two ghost pubes back there."