Muffled Trombone Share definition Flag When you are getting a rim job and your partner drops a butt sneeze in your mouth. Greg: Alex's breath smells terrible today. Heather: Yeah, he got a muffled trombone last night. Muffled Trombone by darrenpowell187 September 27, 2015 0 0 Get merch Get the Muffled Trombone mug. Buy Now — $32.95 See more merch