Verb. To place ones
boner in another's ass crack whilst engaging in the act of spooning.
Note: Boners may be had by both partners but it is important that the
large spoon's
boner be in the the little spoon's crack.
"It was really
nice, we cuddled on the
couch and watched Jersey Shore."
"So you didn't get ANY action?"
"No! We totally creased!"
"Oh, I love a good crease
session."