Side Bowl 

To urinate on the side of the toilet bowl, avoid the water in order to reduce the sound of the liquid release.

Dude #1- I drank so much last night, I was pissing all
night.
Dude #2- Really?!? I didn't hear you
Dude #1- That's cause I side bowl'd it

Side Bowl by Alex Cardenas January 2, 2008

Side Bowl Sit 

When someone poops (usually a child) and sits there for a while until the poop becomes stuck to the sides of the toilet bowl. (Usually discovers by a parent or older sibling later)

“Dang it Billy! You left another Side Bowl Sit! I’m gonna kick you out the next time you do it!”

Side Bowl Sit by PeytonLovesCole<3 February 26, 2019

sidebowl 

To urinate while standing at the side of the toilet bowl, rather than at the front.

I had laundry on the drying rack in my tiny bathroom, so I had to pee sidebowl. S'all good though.

sidebowl by CCzar June 12, 2014