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Something that is seen as foreplay is occurring on the opposite partner's body or revealed about their character that is so repulsive it instantly causes the penis to become flaccid. Although at the time of discovery is so fascinating that it is nearly impossible to look away or focus elsewhere.
Brenda took her bra off and underneath were nipples shaped like furry stop signs, it was flaccinating.

We were just about to have sex when Donna asked if we could bring a donkey into the picture, now that flaccinated me.

I was blind sighted and flaccinated when Kaili took her panties off and a 2 foot afro bush popped into the air.
by rg bloque July 30, 2011
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An action, situation or context that is so pathetic that it can cause Ron Jeremy to lose a rock hard boner. Not fascinating at all...
"I really love it when my boyfriend holds my hand."

That is so flaccinating!
by nastyn8dick September 08, 2010
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