The average Russian man's penis, which is the best penis a woman can experience, but can also be a reference to the average Russian shotgun, which has six barrels.

When a male of Russian decent will drink a gallon of borscht, then he'll walk up to a unsuspected female, pull his pants down, and then have explosive diarrhea all over her face

The old two in the goo, one in the poo done to a poor unsuspecting female.

Just do a normal shotgun with your hand, then extend the little finger too!