A room build or allocated for the sole purpose of spanking yer love hose, wanking in general or having a wankparty. Usually painted an off yellow colour and containing a sink and towels.
I will be back in a moment Im just going to polish my bishop in the Masterbaterium. Good boy, make sure you use the wanklock on the door.
A man or women who would be doing completely un-sexual thing such eating out at burger king and then in three seconds they'll drop their droors and start beatin their meat. Usually scaring everyone away, and in some cases end up arousing some perve.
"I wath eatin me a whopper, when out of thee blue the COMPULSIVEMASTERBATER dropped his drowerth and thtarted beatin hith meet and jizzed in mee fries!!!"
n. title given to he who can masturbate and feel no shame, whose penis' texture is like leather, predict his exact point of ejaculation, can get it under 30 seconds, does not break a sweat, and will occaisionally yawn while doing it
Jody thought Jacob was the true MASTERbater when she caught him masturbating and pressing a pair of slacks while talking on the phone selling timeshares in Florida.