Tim: "I weighed 152lbs before I took a shit. After dropping my shit weight, I weighed 150lbs."

Dennis: "Your shit weight was 2 pounds?! What did you eat?!"

Tim: "Some old chinese food and tacos I found in my car."
by JoeN January 24, 2013
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The phenomenon, reported exclusively by frustrated dieters, of weighing more after a full evacuation.
Having sucessfully dispatched a massive, Niles was more annoyed than surprised to learn he'd gained another 2 pounds.

"Great" he muttered to the scale, "a negative weight shit". "Dieting's not hard enough, now I gotta contend with alternative physics".
Later on he resolved to remove nearly all anti-matter from his daily menu.
by Pbaddy September 10, 2009
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When you chug a bunch of laxatives to quickly lose weight.
"Sally, I need to lose some weight fast. I'm gonna take a bunch of laxatives to lose my shit-weight"
by Ghostdik May 14, 2020
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