The courtesy whistle made when pulling a train to signal that your turn is over and that it is time for the next in line.
I had a hard time blowing my train whistle after I blew my load on your mom's face.
by T. Cotton November 01, 2007
The trifecta of sound created when a girl farts, burps, and queefs simultaneously
Ashley let out a Train Whistle so loud it stopped traffic.
by Frankie Puscher August 31, 2015