What is Trouser Trumpet?
1.
A loud but musical breaking of wind, or fart.
"As a hush descended on the dinner room at Hogwarts, just as Dumbledor rose to speak a sudden sharp trouser trumpet honked into the air. Ron Weasley looked as red as a beetroot; In fact, it was Hermione who in typical muggle fashion had done it, but was willing to pass it on to Ron."
