Colloquial term for a person who wears an offensive looking rats tail. Most commonly used in New Zealand, it can also refer to someone who is a obsessive user of Facebook chat.
"Yuck that's disgusting, you're such a shaumati"

"He's always on Facebook, he's a blatant shaumati"

See also: ratty dratty facebook chat facebook chat blue balls facebook chatting
by Yogi Bear 87 NZ October 15, 2011
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