Gymtendo 

The art of not being able to work out at the gym while your home team advances to the next round in the playoffs.

WE COULD ALWAYS gymtendo our way to the Stanley Cup.

Gymtendo by Murray the K July 27, 2020

Gymuendo 

An innuendo or double entendre heard at or relating to the gym.

Person on rowing machine 1: It's sometimes hard to make yourself come, but you're always glad once you've done it!
Person on rowing machine 2: Wow, what a great gymuendo!

Gymuendo by Darklight Angel April 25, 2011