Mastercock 

The mammoth cock that always seems to show up when on the website chatroulette.com

oh man i gotta find me som titties on chatroulette.com. OH SHIT! MASTERCOCK! PRESS F9 PRESS F9!!!

Mastercock by roosterstroke March 7, 2010

MasterCock 

The Big dick bastard that has a cock with a mind of its own. there are times when the mastercock gets what it wants simply because he has decided to reveal himself to the hottest girl in the room and without delay, the owner of the said mastercock is in a bathroom or nearby broom closet with his pants open and that fine girl that no one else can bang is on her knees gagging and loving it.

MasterCock is the one that decides what girl he fucks and what girl he refuses

you may think your dtf but mastercock says she ain't up to standards than an hour later it's rockhard because it has found its target

that closet hotty that you never suspected to be such a dirty little freak.

well the mastercock has spoken and now that fine bitch is chokin on my dick

MasterCock by AXXLEROD October 10, 2020

master cock 

The act of peeing without holding ones penis. In essence the cock is control thus it is the master. It also asserts its dominance over other cocks who cannot achieve this feat, making it the greatest cock thus adequately named the master cock

Girl: Eww why didn't you wash your hands after peeing?
Guy: Its ok, I master cocked it.

master cock by peppy the poopdaddy October 15, 2011

mastercaker

when a boy masterbates with a cake
-when he sticks his penis in a cake and humps

the baker is a mastercaker

mastercaker by my-peroid-is-near June 29, 2014

Masterlock 

Poorly made shit for shit lock. There are several ways to unlock it without picks. It's possible and extremely easy to make a shim out of a soda can and unlock it.

Jack thought his bike was secure with his Masterlock, but the next day someone guessed his combination in 3 minutes and rode off into the sunset.

Masterlock by A man in a suit October 10, 2005

Masterfucked 

The superlative needed when "fucked" just isn't a good enough description.

"That midterm masterfucked the shit out of me."

Masterfucked by isteratter October 23, 2010

Masterbooking 

Hitting the "like" button on your own Facebook status.

Have you noticed how William always "likes" his own status? It's like he's masterbooking or something.

Masterbooking by lrchtr December 7, 2009