The act of making an erect penis flaccid or even go inwards, mostly by showing shocking, gross and/or gory pictures or vidoes. This is called the psychic de-erection. A psychic de-erection can actually be caused by basically anything as long as the person looses his erection from the picture, sound, thought, or non-physical influence.

De-erecting a penis can also be performed physically by smacking the gland hard with the palm of ones hand. A myth shown in movies says that this act is usually done by smoking hot nurses. Though, it is usually done by either a man or a fatty nurse named Ursula.

Another myth says that a physical de-erection is very painful, and that is indeed true.
Oh my god, last night Brad showed me this video called "2 guys 1 horse." My penis totally de-erected!

That fat chick last night totally gave me a de-erection!

"Did you hear that Simon went to the doctor last night?", Said Rick. Jane looked shocked. "How come?", she said. "He just got a de-erection, no big deal"
by The Crazy Madman November 1, 2011
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when a penis withdraws completely into the body of the male, much the way a tortoise retreats into it's shell during times of fear
There was a point of time when Lindsay's lovely bosoms hoisted my flag, but now here anorexic body gives me a de-erection
by Harry Pudi December 28, 2006
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When you take a hit from the Lemon Chello Cartnite cart and blow it into a man's urethra so that his dick gets chill like that and gets less hard.
Yo bruh, she gave me that De-Erection and everything was A-Okay!
by gioisdying February 26, 2023
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