Cincinatti Wind Tunnel 

The act of blowing air into your partner's anus, thus filling the anal cavity with air. Then, the male partner immediately inserts his penis into said partner's anus, thus resulting in a blast of air across the sides of the inserted penis.

Brett giggled as he watched his pubic hair rustle in the wind after giving his girlfriend Susan, a Cincinatti Wind Tunnel.

Cincinatti Wind Tunnel by Duderman July 19, 2009