1 definition by DirtyLittleSpaniard
When a man and woman (or another man) engage in the act of SEX. Half-way through their plundering, a Mexican midget jumps into the fun and stays between the two original fuck buddies for the rest of the ramming session.
Boy: Last night, I invited Pedro over for a Mexican Threeway. He was amazing. Too bad he was deported back to Mexico.
by DirtyLittleSpaniard July 5, 2011