A sexually stimulating act in which one partner inserts his or her closed fists, one on top of the other (fingers facing each other) and inserts them quickly into an unsuspecting partners Vagina or Anus while yelling "It's Morphin Time!" then once both fists have been inserted, both hands must open, fingers spread, and the receiver must then yell the name of a Dinosaur.
'Timmy jammed his fists far up Nate's rectum while yelling "Its Morphin Time!" quickly followed by Nate screaming "TYRANNOSAURUS!"'
by Draviman January 01, 2010
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