This is the act of multiple men ejaculating into a woman's vagina. The motion of the penis moving back and forth in the holewill slowly turn the semen deposited inside into butter. The pussy itself acts as a churn vessel for the butter to be produced, thus the name of 'pussy churn' is given.
Rob, Simon and Derek fucked that girl so hard. They all came in her and by the end of it they made sweet butter from her pussy churn.
A person who is an a**hole while playing Yahtzee or Dice with Buddies, filling the room with haterade. Especially if they are the only player without a yahtzee.
Nina is such a Nahtzee, she threw the dice at me and told me eat her nutsack because she didn't get a Yahtzee.