When you put a fist in someone's ass and open your hand as wide as possible. This is also known as a "Staten Island tsunami"
by TbagMartin March 23, 2010
Get the FLUMPER mug.I tried to wank last night but I was flubberducking so loud that my mum walked in.
Dude, I can hear your flubberduck from across the hall.
Stop flubberducking John we're at the cinema
Dude, I can hear your flubberduck from across the hall.
Stop flubberducking John we're at the cinema
by Vagbubbles December 6, 2013
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by bigrichard III May 18, 2016
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Get the flubber nutter mug.To be in a sexual position where one person is standing and the other is upside down being held by their ankles by the aforementioned participant.
"Dude, I totally saw Charlie and Fiona having a flomber behind the bikeshed earlier"
"Brian, do you want to go swimming today?"
"No sorry, I'm going for a flomber"
"Brian, do you want to go swimming today?"
"No sorry, I'm going for a flomber"
by Commune Bandits April 21, 2010
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