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1. The act of urination.
2. The lavatory.
Ooer, I really must use the damned piddly diddly department before I soil my underknickers.
by homosexual March 29, 2003
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Somewhere where one goes to 'relieve themself' as oppose to the 'poo-parlour division'!
Random person 1: "I really need to go to the piddly-diddly department"
Random person 2: " Ahem...I think you should have gone to the poo parlour division"
by Meeeeeeeeeeeeeeeeee April 09, 2004
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