Bonzai_'s definitions
When someone at the gym drops a load of weights suddenly, usually in a machine, causing a deafening sound to occur. A common phenomenon and most people try to act like they are not bothered.
I don't know if that guy is trying really hard or just being annoying because that was some serious gym thunder.
by Bonzai_ February 7, 2015
Get the Gym Thundermug.