1. When an assumption is tasty and delicious and you can't get enough of it.
2. When a person seems sexier due to your precognitions/biases of them.
To many people, the assumption that God exists can make religion very asscrumptionous as it's very reassuring and satisfying to imagine an omnipresent God who loves you and cares for you.
I wonder if that blonde chick is a hot dumb lesbian. Imagining a threesome between us and her friend makes her all the more asscrumptionous.
1. Select a player (real or fantasy) during a sports draft to spite or anger one or more of your opponents because they had intended to select him/her.
2. Select a player (real or fantasy) during a sport draft to put one or more of your opponents at a strategic disadvantage.
1. Billy hate drafted Chad OchoCinco because he knew Sam had wanted him since he is from Cincinnati. Billy already had plenty of players to fill that position but wanted to make sure Sam didn't get him.
2. Billy hate drafted Peyton Manning because he was the only good quarterback left and he knew Sam had been planning on drafting him.