Top Definition
When a friend is excited about something you offer him a High five, when he goes to slap your hand put your hand limp and forward so that he slaps the back of your hand, at this time you shout "deadphish". Your friend will most definitely be disappointed and insulted.
I just pwned kleiner so hard when I deadphished him after his winning pong shot.
by Sean Moorman January 27, 2008
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