|1.||Bustin' a McNasty|
(Verb) A term used to describe the action of doing the raunchiest, filthiest, most disgusting acts of sex imaginable. The 110/100 on the disgusting scale. The magnum-opus of dirty sex.
Man 1: "So then I stuck my ball-sack in her shit-stained ass while she moaned for more of it! Then I pissed all over her!"
Man 2: "You were Bustin' a McNasty, weren't you?"
Man 1: "Hell yea bro!"
filthy disgusting shit stain piss slime anus raunchy shit stained balls mucus covered dick