An aggressive sexual act between
two homosexual males in which both males must be large hairy men, otherwise known as "bears" or "yaks". The men must face off to one another on all fours while completely nude and attempt to establish dominance through only the use of their penises and makeshift
yak horns made of dildoes attached with duct tape.
Adam and
Jeffrey, both bears, slapped dildoes to their heads and
began yakking when their wives went to the
store.