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a.d. means anonymous dick. It is usually in the context of a random hookup, especially involving oral sex on a guy. It mostly refers to gay guys or guys who have sex with men.
I really could blow some A.D. right now!
by Mister7 December 05, 2009
2 8
AD stands for after dark, as in ugly ass woman who come out after dark.
Cft told me bout that ad u been kickin it with, lol hope u dont catch somthing.
by i git sum December 11, 2007
15 38