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1.
Formed from the word Madnotes, gaynotes is used as a term to describe something you dislike or don't agree with.
Barry: ay man theres no mix left?
Trent: ahh serious!? thats the fuckin gaynotes
by beyondONE January 18, 2009
 
2.
Much like a side note; an announcement made by a straight man that he is about to make a seemingly homosexual statement.
Dude, if your girlfriend doesn't hurry up we're going to be late; and on a gay note, you shouldn't wear brown shoes with a tuxedo.
by Brutal Iris July 11, 2011