Top Definition
When you need to wank and it makes a weird noise which sounds like a rubber duck and flubber
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
#slang #dirty #humour #flubberduck #badonkadonk
by Vagbubbles December 06, 2013
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