The sexual technique of receving two phalluses at the same time, one in both the oral and anal cavity. The maneuver is performed with two males in a standing position and a female in a crouch position to give the illusion of the proverbial "lamb" being roasted on a spit.
"Man, me and a guy totally lamb roasted this chicklast night"
"Yo babe, you want to lamb roast tonight at my crib?"
"Biatch, GTF onta me an' my homie's dongs before I pop a cap in yo' mane!"
When doing anal, you cum as deep as you can inside the girls assand then she diarrheas in out into the toilet and you both look into the toilet with aw.