Top Definition
When she lets you put it in her pooper for the first time.
I finally made it to turd base last night.
by jumbofrank December 27, 2008
When you fart in front of, or take a dump for the first time while hanging out with a girl
I was hanging out with my date when i slid into turd base and she called me safe.
by worthyexpress August 12, 2007
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