When a guy finishes peeing, shakes off and zips his pants back up, then a little more pee drips out and creates a very small, roundish dark spot on said guy's pants.
afterdick is the persistence of a sensation of flavor after the stimulating member has passed out of contact with the sensory end organs. The term is particularly used in relation to another dick that has been there before you.
Your friend had sex with said girl. You have sex with the same said girl, now you have had some afterdick. Afterdick only applies when you know the last person she sleep with.
NOUN: A friend you'll see once in a lifetime, but then never see them again. Like you will still remember them, but you will never see them forever more.
Girl 1: Like, and then we hugged and then we became afterfriends!
Girl 2: Man that sucks that Nick is a afterfriend.
Girl 1: Like, I know right? He was so hot!