Top definition
n. A state of euphoria induced by lack of sleep, similar to being high or intoxication.
Usually involves giggling uncontrollably at unfunny things and slurring word.
adj: Smulthed. being in a state of smulth.

derives from a slur of the word sleep itself, said while in a state of smutlh
It's really late. we should get some smulth...

I stayed up until 7 am yesterday. I was so smulthed I thought the phonebook was funny.
by PockyFille April 30, 2006
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