when, after giving a blow job, one spits the semen back into the guy's face

Large, beautiful breasts that are keep well consealed and initially appear to be much smaller and less impressive than they actually are until unleashed.

A Venetian Fountain happens when 3 guys have to go number 1 and 1 guy has to go number 2, but there's only one toilet.

This is how it works:
Two of the guys go number 1 in the upper deck (or reservoir) of the toilet, while one guy sits down to go number 2, and the last guy goes number 1 by peeing in between the legs of the guy going number 2.