Trombone-Job 

The act of sticking one's penis into the bell of a trombone and another person blowing into the mouthpiece.

This is a great trombone-job babe, now play an F.

Trombone-Job by Switzerlandplus July 26, 2014

Trombone Job 

Whilst sucking on the erect penis of the male origin, stoke your fingers from the front of the taint across the testes.

In the middle of an ikea, during a band concert she gave me a trombone job

Trombone Job by AidenHall July 4, 2016