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2.
When ones hand is limp to the wrist, and one flops it around while saying with a lisp or in a partially thick voice "SALMON HAND!!!" Derived from Derek, and can also be found in a handshake, when one's hand is limp.
Ben: Salmon hand!!!!
Thomas: Salmon hand!!!!
by T-Sizzle! January 29, 2006
 
1.
An expression of mis-understanding or general confusion, Often demonstrated with the waving of a hand and followed by the noise of someone being trapped, rather confusingly underwater.
Person A "hey so cheese finger scary tuesday"
Person B "SalmonHand" *underwater noise*
by JohnC86 March 22, 2009