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1.
SMTO is a text which females would send as a more vulgar form of LOL or LMFAO. The acronym means "Snickering My Tits Off" it should be used by only females or large breasted men
Gene: your brother is so stupid, he thinks his anus is a vagina and that's why he is ridiculously gay

Helen: SMTO!
by Tommy Littlefoot III May 27, 2012
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