when your balls tighten up towards your body thus "propping" or lifting the penis in an upward and outward direction
I can see your member from a mile away. Make sure you dont turn to the side. You have mad penis prop.
by captainK143 November 13, 2007
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Propping up the flaccid penis of an unconcious male, using such objects as popsicle sticks and medical tape, so as to have sex with said unconcious male
Jonny B. was penis-propped in his sleep, but woke up horrified in the middle of the act.
by William McMilliam July 8, 2005
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