Top Definition
When Valentine's Day comes after Friday the 13th, which occurs approximately every 6.7 years, those who fall in love, are blessed by the angels. According to astronomical data, the average person experiences this phenomenon 13 times during their life cycle. This is known as "Valentines 13."
February, Friday the 13th 2009: At the stroke of midnight, Valentine's Day will touch Friday the 13th. This is how the term "Valentines 13" came to be.
by I love the Number 13 December 31, 2008

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