Popping one's genitalia into something or someone (or letting one pop their wiggler inside you) who is not their significant other. Like pulling a Benedict Arnold except this time it isn't a country being betrayed...it's one's personal piece of ass.
That filthy girl commited one of the biggest acts of ass treason imaginable...for not only did she open her legs for that random dude, but then took the Scotish Terrior home for a little under the covers desert.
by Ashton Bland October 23, 2006
Available Domains :D