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."