A muck ring is the ring of shit that forms around a penis during anal sex. A Felcher is one who felches. Therefore an MRLF is someone that felches and licks the muck ring off of penises
He's an Muck Ring Licking Felcher (MRLF)
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A politer way of saying to a friend, i'm going to fuck your sister then sloppy jizz over her tits
Dave: Bobby, since you wouldn't make me a brew its Time To Chuck My Muck Over Your Sister's Jubblies
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Slang for gay sex with Lil Raz
Big Raz: Hey man want to hop on muck?
Lil Raz: No. Please no.
I ate a quad of shrooms last night, I was fucking mucked out bro
After you take a shit and wipe your ass you think it's nice and clean only to find out theres still some more in your o ring.
I have to go wipe my muck ring .
Tom: "I really wish I had a bad bitch so I could muck sush right now."
"Sorry I'll call you back. I'm mucking sush."
Blowing a load with gonnarea
I filled her stench trench with my fuck muck