A college (specifically, the College of William and Mary) slang term for kicking a roommate out of a shared room so that you might have some . . . quality time . . . with your significant other.
Exact origins are unknown, but theorized by some as Seek Possible Other Occupancy Now. (yeah, I know - doesn't really roll off the tongue, does it?)
"Bob, do you mind if I spoon you tonight? My girlfriend wants to come over."
"Man, Bob spooned me! Can I stay at your place
"Sorry, the Roommate agreement form
says 'No spooning during finals.' Get your sex elsewhere."