Usually used among people who have ancestors from countries that were once ruled by the Russians, like Poland (almost all polish grandmothers/fathers will tell their grandchildren and children to "never trust a russian").
Jane: Is she Russian?
Anne: Of course.
Jane: What a dirty bear fucker.
an irish car bomb followed immediately by a minderaser (both must be downed with serious speed)
Will: I got bear fucker on my team.
Dillon: Im the only one on our team.
Will: You just blew up our mongoose
Dillon: I dont know how i shot at the enemy.
Will: You just killed us and lost the game