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When you're sperm usage is so "large and in charge" that your penis takes a shape of a dinosaur. Other definitions may be that your irection is so beastly that it is most likely the size that of a dinosaur
Megan: Dang Sterling got me in the bed last night
Cassie: I heard he's real good in pleasing our sexual needs
Megan: He gave me one of them dead gum dinoirections
by Lil John's Sex Slave June 06, 2009
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