Top Definition
When a girl performs 30 second of oral sex on a guy and then stops. the guy then terminates hooking up with the girl and proceeds to jerk himself off while she is in the room.
"Man did you hear what Alex did to Linda"
"Yeah, I heard he gave her the Dirty Zt, how awkward for Linda!"
by Honest Do-gooder September 27, 2009
5 Words related to the dirty zt

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