Xylophone sex 

When you take a mallot from a xylophone and shove it up your own ass, or having someone else shove it up your ass, or just going off on the stick.

Dude I totally had some extreme xylophone sex by myself last night.

Xylophone sex by Awesome729 January 8, 2010

Xylophone Sex 

to line up five or more females by either height or pitch of their voice, and proceed to bent them over and have the most amazing Xylophone Sex ever. (if done right they all will make a different sound during the Xylophone Sex)

Jim: dude i just had some great Xylophone Sex in the band hall!
Bob: holy shit man!

Xylophone Sex by Sam-the-Weatherman May 26, 2015

xylophonesexual 

when your subconscious reveals to you that you want to sex up xylophones

"One time i had a dream that i was going to have dream sex with a guy but then he turned into a xylophone." - quoted from a true xylophonesexual

xylophonesexual by garettmc January 7, 2021