Top Definition
When despite hoping for the best, a man fails to get an erection due to high quantities of illegal substance
Post rave: 'Well it was always a bit floptimistic to think I'd be able to shag her...'
by Daarti February 08, 2015
In poker, unable to fold a middling hand to a large raise pre-flop.
Lon: Giannetti makes the call for a million with deuce-four suited.
Norman: I guess Giannetti is floptimistic.
by Michael Grant January 21, 2012

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