Urinate
31Splatter the bladder — urinate …
32Strain the potatoes — urinate …
33Syphon the python — urinate …
34pass water — urinate …
35pump ship — Urinate …
36take a piss — urinate …
37wet the bed — urinate while in bed, urinate during sleep Some kids wet the bed because they have emotional problems …
38obey nature's call — urinate or defecate …
39relieve oneself — urinate or defecate …
40spend one's penny — urinate, pee …