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While having anal sex your partner cums/nuts/shoots his load into your ass then you immediately clench your ass cheeks together and jump up and down. After jumping a couple times you squat and release whatever comes out of your ass that has been mixed up with the semen into a cup for your partner to drink.
Friend: "Sarah, you gotta tell me how you night with Nick went?!?"

Sarah: "It was amazing, best yet! He pounded me in the back so good and when he came, I gave him a reverse milkshake."

Friend: "OMG, that sounds like a good night! Now you got me feeling thirsty."
by @$$chat22 April 26, 2017
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