Suihku paska & runkku (english: Shower, Shit, and Jerk-off).

Commonly used slang word in Finnish Army, which means that your are going to shower, take a dump, and jerk off at the same time.

Usually conducted in a toilet booth with hand shower.
See you guys, I´m gonna go for suparu.

Dude, you just did suparu didn´t you?

There´s water with jizz on it floating on the toilet room floor, I bet someone´s just done a suparu...
by Ex-Military June 21, 2018
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