What does GMT mean?
(1) Getting Me Tight - getting upset, frustrated or angry at a person or situation.
Other definitions of GMT:
(2) Give me time - "I need more minutes!"
(3) Greenwich Mean Time - the mean solar time at the Royal Observatory in Greenwich.
(4) Gnash My Teeth - to grind one's teeth as a result of clenching their jaw in frustration.
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How to use the term GMT:
(1) "Every time my friends talk about politics they GMT."
More slang terms:
For the most part