Top Definition
When a person is going through adolescence and may think they are gay and are displaying moody behaviour equivalent to pre-menstrual tension in women.
Gayriod...When someone is joking around and they call somebody gay and then that person has a totally over the top reaction to it because it may be true. PMT - pre menstrual tension. GMT - gay menstrual tension.
by sarcosis January 15, 2012

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