slide trombone
The act of sucking one's ass while giving a hand job
Alex gave Taylor a slide trombone last night.
Sliding trombone
Two dicks in one hole thus the shafts of each penis would have to touch. The gyrating motion of sex would cause each shaft to slide past the other. This issue can happen on purpose or accident.
Micah and Tim were banging Cindy one in the pink and one in the stink when Micah slid out and instantly joined Tim in a sliding trombone
Sliding Trombone
To perform a long, stroking, wet blow/hand job.
sliding trombone blow job