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Used to describe a person who is socially awkward and serves no real purpose in a group of friends.

Originated when a group of friends were spooning on a trampoline and there was one friend who was not in the spooning line. This friend was called the soup knife for he was not a spoon.
On Malka's Trampoline:

All: This is a great spooning session.
Jalen: Roy, Why aren't you in this line?
Roy: No, I'd uhh rather kick it and do uhh nothing.
Lauren: (Obnoxious Laugh) You're such a soup knife Roy!
by creverand12 December 31, 2009
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