1 definition by Erik and Lauren

when your girlfriend is being a bitch and you want to teach her a lesson, you vertically apply force quickly in an upward motion (like a karate chop) to her vagina, while lifting her off the ground.
Shaina: (bitching and embarrassing her boyfriend at a party)
Andy {the boyfriend}: shut the fuck up already! (whoopah)
Shaina: (cries)
Erik: Dude did you just tacochop your bitching girlfriend?
Shaina: (cries again and her cuntbone{ie. see cuntbone} is bruised for days)
by Erik and Lauren September 6, 2007
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