A Jelly taco, is simply a vagina during it's menstral cycle. If a female were to be having her period, she and/or her vagina would be referred to as a Jelly Taco.
"Yo did you hook up with that chick last night"
"Nah dude, shit was jelly taco didn't go near it."
7👍 6👎
It's when you put grape jelly on you penis and have intercourse with a woman. Then you eat her out.
Joe:Yo man you wanna help me make a grape jelly taco?
Emily:Sure lets go to the store.
Joe:No man not that kind.
Emily:Oh okay ill go to the kitchen.