when a chick puts her lips on the side of your banger and slides her tongue across the side of your shaft while sucking, kinda like playing a harmonica but sucking instead of blowing...
A whistle that is made of meat, generally penile meat that has a musical tune played on it such as "Nic Nac Patty Whack" typically by a woman. Although the "Meat Whistle" usually belongs to the male, it sometmes belongs to the transgender female. The tune can still be played on the transgender, however, that would in most circumstances mean that the "tune player" would be gay or really butch although still in female form.