Top definition
Meaning: Sad, Dopey, Stupid, Senseless and Lame

When your mate is being a dick you call him a smumg guy or just smumg.

Pronunciation:
Smum-g (g sounds like ge at the end of strange)
Josh: "Hey bro can you shout the food I forgot my money?"

Jamie: "What a smumg guy, you did this last time."

Josh: "Oi bro don't be smumg."
by JayCJP June 02, 2016
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