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2.
Fuck Me Twice On Sundays; an expression used to express disgust to an unexpected event — quite the opposite reaction to what the acronym stands for
FMTOS, you've got to be kidding me.
by Deb M. March 11, 2013
 
1.
Freezing my tits off.
It's so cold outside. FMTO.
by MANANANANA April 09, 2011