Top Definition
A term for a vagina with large, flapping labia majora.
Mios Dios! That sideways taco is enough to feed all the king's horses and all the king's men!
by Slick Dick Lick/Gerber Baby June 18, 2004
1 more definition
When turning a taco sideways (vertical) it resembles a vagina.
Woodsie - I'm Hungry
Sile - You should call Cindy, She'd love to give you her famous Sideways Taco
Woodsie - Word
by Dan "Skidmarks" July 10, 2008

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