2 variations.

1. Take your boner and shove it up your ass and when you let go you get a nice "snap" effect.

2. When you have a boner you pelvis thrust an create a whiplike "snap" effect.
I snaparooed the other day and I can still feel the pain when I get a stiffy.
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Me: Wanna take a snaparoo?
Friend: Yeah let's take a quick pic for the gram!
by Do it for the gram March 1, 2020
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