A sex act where one of the 3 participants is wrapped up tightly in a strong duvet which cuts off blood circulation to the arms and legs and only the head and anus of the person is visible. A Mexican or a person of Mexican descent uses extra hot salsa as a lubrication and fully inserts one or more fingers into the persons anus whilst performing their native Mexican dance - "The Shimmyshanga". Meanwhile the other participant dips his or her genitals in sour cream dip and/or guacamole. They then continue to use various rapid movements to pleasure themselves using the trapped participants face.
-"Hey man how did you and Shannice get on last night?"
-"We hooked up with Pedro and went home. Things got pretty hot and spicy and we ended up doing the chimichanga alllllll night long"
-"i feel awful this morning. feels like I've been wrapped up in a strong duvet whilst a mexican fingered my ass with hot salsa whilst another person slapped a sour cream cock in my face."
-"Mate. You've been chimichanga-ed"