When someone with a penis lies on their back, and a 2nd party takes a seat on said penis (Lube req'd). Once seated, one places both hands on the bottom person's chest and throws their momentum in one direction, resulting in the top person engaging in a thrilling spin, much like in an office chair.
We had no lubricant, so when my boyfriend and I attempted the office chair, we did not even spin 180 degrees.
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