When your in a hurry(whether it be to get back to video games, dinner, or bed) and you push to hard while peeing, coincidentally shitting your pants.
I heard David in the bathroom at lunch. He was pushing so hard peeing I thought he was going to shiss!
by David smallwood February 4, 2015
Get the Shissmug. by The shissmaster October 20, 2009
Get the Shissmug. by yourmomscousin April 24, 2020
Get the shissingmug. When you are walking your dog and he attempts to lift his leg to take a piss, then re-thinks he has to shit. Resulting in a dog shitting with his one leg up. Very comical!
by Tiptop77 November 28, 2012
Get the Shissmug. by Thepansexualunicorn July 21, 2017
Get the Shissmug. im off for a Shiss
by Max Donnanoodles August 12, 2016
Get the Shissmug. Oh dude last night I had like 10 White Castle burgers with a big fucking pepsi and half hour later I was shissing like crazy while licking Concheta's vagina.
by AzienSnsation November 14, 2005
Get the shissingmug.