rear·ri·nate
ˈrir.iˌnāt/Submit
verb
discharge urine; pass water while facing away from the urinal and bent over.

Often takes place in public bathrooms. Subject faces away from a urinal, bends over tucks his or her penis between their legs and urinates. Though not required, pants at ankles, and missing target often observed and completely appropriate.
As Charlie rearinated, he turned to the gentleman in the next urinal and asked, "do you work out?".
by mercalator May 22, 2018
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