triassalon 

the act of defecation in tri-forrm. Anal eruption in any combination of solid, liquid and gas.

I had to cancel my date with Kristen, because I ran a triassalon in the shitter last night...

triassalon by t gundy August 10, 2013

Toilet Triathalon 

When you beat off, take a piss, and drop a deuce all in the same session in the bathroom

I had already beaten off but then i decided top go for the toilet triathalon.

Toilet Triathalon by jeffbeeck1997 April 27, 2015

triassthalon 

Prior to starting your race you have a nervous stomach and poop inside your swim trunks/body suit

My race became a triassthalon due to my nerves as I pooped myself

triassthalon by Tamkin cpa June 3, 2021