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
by Vagbubbles December 06, 2013
Get the mug
Get a Flubberduck mug for your Facebook friend Paul.