When you are licking a person's asshole and you blow air into his or her anus, resulting in a long fart.

1) ancient music instrument that consists of usually ten or more stopped pipes of different (mostly escalating) lengths.

2) less commonly the base of a flowchart on toothpaste for dinner. simply put, you don't need one.

When a group of men line their penises up in a row and someone blows across them like the playing of a pan flute