Meaning a curvy ass, fat ass, round ass. Word invented by Lil Marky Mark of Las Vegas.
Damn look at Beyonce, she got a muffinback.
Sanchachos. Noun. Its a relationship between 2 lovers who are committed with with a different relationship.
The word is derived from a Latin root word Sancho which means Lover and Sancha which means Mistress.
The Sanchachos are fucking again inside a jeep in the Apartment parking lot.