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1.
Something that smells particularly pungent. See pong
Smells a bit pongy in here...
by A_Llama March 04, 2004
 
2.
Pronounced pon-ghee.
A rarely-used British slang term for a cat.
'Aww, nice pongy...'

'Murray is the bestest pongy in the whole wide world and Margate.'
by Dexanari June 06, 2007