Swooping Magpie

A swooping magpie is defined as the act of masturbating on a balcony and ejaculating over the edge to land on an unsuspecting member of the public passing below.

Brenda to Brian: Brian I think a bird just shat on you.

Brian to Brenda: No Brenda my dear, that was in fact a classic swooping magpie. I better get cleaned up.