When a guy wraps his penis in money. Then he sitcks his money covered dick in a womans vagina. Then when you're done, you go buy condoms with the used "mulla".
Dude, I had mulla sex with Miranda last night. And the clerkactually excepted the money!!
1, When your bloke cums to fast and doesn't satisfy you.
2, Term often used when, a gentleman shoots ones load prematurely, very early on in the start on sexual intercourse, leaving the young lady very frustrated and unsatisfied.
"How was your date last night? It started well but turned in to Mullysex"
Boys who enjoy yaoi (a genre in Japan that contains sexual and/or romantic relations between two men); literally translates to "rotten boy"; corresponding female : fujoshi