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1.
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
by Alex Cardenas December 06, 2007
 
2.
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.
by CCzar June 12, 2014