To get an erection while spooning or cuddling another individual. A spoonicorn may be used to poke the backside of said individual to coax them into coitus.
i got a wicked spoonicorn last night when i was with heather, its cool though she took care of it.
silly words maddy makes up and claims are in the urban dictionary.
"Sounds like another one of your spoonicorn's to me."