A female human takes her thumb and sticks it up a male human's anus. She then wiggles her fingers playing with the scrotum and says "FLOPSIE!" in a high pitched voice.
Last night I got the world's best FLOPSIE!

I tried to give Hank a FLOPSIE but I couldn't fit my FAT thumbs in his anus hole!
by Mycousintoldmeaboutthis!!! August 23, 2008
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A hipster-mobile that is often described by hipsters as a "non-fixed gear bicycle" so as to hide their hipsterness. It involves rotating a gear installed in reverse so as to appear less hipsterish, but accomplishes the exact opposite task, as it, in effect, makes said individuals more "on the cusp", sociologically speaking.
As he grasps his hot pink brake grip tape and spins his non-dynamic'd geared bike's pedals backwards, Duffy vehemently denies that his Flopsie is a hipster ride, thus inexorably proving that it is.
by ZazzBlammymatazz October 20, 2010
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When a man and a women are about to have sex, but the man loses his erection when his penis contacts her vagina
"Man I was about to get some last night but I went flopsy."
by Mcdrizzle February 14, 2010
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derived from the singer Ville Valo due to his curly hair and hat.A flopsy is always male and often has an arched back.
ooooh flopsies!!
by pokie_orna December 19, 2003
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When your shorts, boxers, or briefs are just loose enough for your man-junk to fall out.
Oh man, I sat across from grandma at the barbecue and had a flopsy. She TOTALLY saw the frank and beans.
by j-to-the-r April 26, 2009
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A male or female who is gay or bisexual.
Those two guys walking together look a little flipsy flopsy
by ronald T. December 20, 2007
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