To sponge is when you're totally dying to go for a wee and then you break wind. The act of releasing the pressure of wind make you accidentally dribble a little bit of wee. A splonger would be a person with a weak bladder and gaseous backside.
I should've gone to the loo already, I've just splonged.
Why did you just change your underwear, did you splonge?
Why did you just change your underwear, did you splonge?
by Bodley February 03, 2012