When two bros simultaneously penetrate both the vagina and anus of a single woman with their wankers, they become Siamese Eskimo Bros. Can also occur when both bros simultaneously insert their wankers into just one of said orifices, although this is much more difficult depending on the size of the talliwhackers and the diameter of the females vagina or anal cavity.
Jeff and Tom sealed their friendship when they double penetrated Sally by running train on her pussy and anus at the same, thus becoming Siamese Eskimo Bros.
Play on an "eskimo kiss" but for bro's. This involves 2 bro's rubbing their elbows together while flexing and checking out each others bulging biceps.
Those guys at the gym totally have a bromance going on. They're only wailing on their biceps so that they can look good for their broskimo kisses later tonight.
one of those conformist bro kids who wears true religion jeans (sagged a little past the crotch), styles his hair up in a fo-hawk, and most importantly regularly wears his extra fluffy, oversized parka jacket with the furryhood
"Hey Zane, look at that eskimo over there with the parka."
"No Greg, that's a broskimo, notice the pierced ears and faux hawk..."
one of those conformist bro kids who wears true religion jeans (sagged a little past the crotch), styles his hair up in a fo-hawk, and most importantly regularly wears his extra fluffy, oversized parka jacket with the furryhood