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1.
A large, oozing boner is sometimes referred to as a "glistening."
HAHAHA! Look at you, you've got a glistening.
by Running out of patience April 02, 2007
 
2.
A sparking, shiny after-sex glow.
Jordon is finally glistening after he climaxed for the first time.

Can you believe Jordon doesn't know he is glistening??
by TicklePickles June 04, 2013