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When you twist your penis 180 degrees and pee in your sisters mouth whilst playing twister. One hand or leg needs to be on a yellow color.
We had a family game night but it ended up in a sister twister
by T sckwizzle September 07, 2016
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When you put your dick in your girls ass, and proceed to spin her like a helicopter blade. Doesn't have to be your sister, but it can be. Works best with small girls as they are easier to spin.
I had a dream last night me and Mila were doing the sister twister when my dad walked in.
by BigOlBeanBoy June 16, 2018
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