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2. bunged up
Constipated, unable to take a shit. A bunghole is your asshole.
I ate an extra-large meatlover's pizza and a pound of chicken wings yesterday, and today, I'm real bunged up.
1. Bunged up
When you have a cold or flu, you are bunged up.
When the nasal pasages and sinuses are full of fluid from the cold you are bunged up
3. bunged up
Bunged up meaning messed up or fucked up.
"Yeah, he was quading and totally bunged up his knee."
or
"My girlfriends acting all bunged up!"
4. Bunged up
Absolutely hammered

or

Fucked up in any way
He was so bunged up he knocked over the whole barrel of jungle juice

or

I was so hammered last night I fell down the stairs and bunged up my knee
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