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a sound made when a person says/does something ridiculous, stupid, or uncalled for in public. Used mostly among males when other "bros" or dudes say/do unmanly things.
Stephen: "i'll steal yo doritos n snack on em like a cheez monsta. rawr!"

Leron: "mernh" (that kid is so stupid)
by sleee4eva September 23, 2009
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