similar to southpark's "manbearpig" a manbearwhore is a manwhore who, despite numerous attempts by women, will not be locked down by a relationship. manbearwhore's are usually of Russian decent, and despite their reputation, still attractive to women. Usually, women who feel the "challenge" to change a manbearwhore into a solid, relationship-type of guy. This typically ends in disappointment and frustration; as it is nearly impossible to turn a manbearwhore into a man who is welcomes monogamy.
"Roman has already slept with two ladies this evening, and is on his way to attempt a threesome with that stewardess from Miami. He is such a manbearwhore"