During the act of lovemaking, the male proceeds to position his female partner such that her legs are pointing up and she is standing on her head/shoulders. He then proceeds to straddle her and defecate inside her vagina, thus making a "muddy taco."
Last night while Brett tried to give Margaret another muddy taco, he slipped and shat all over her.
When you want to assert dominance but T-posing doesn't work so you pull out a Taco from your pocket and eat it without sharing.
Person 1.) T-Posing is dumb it doesn't assert dominance.
Person 2.) You have forced me to unleash my most powerful attack I will use my POCKET TACO on you! Prepare to suffer!