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2. Hallmark Day
A nickname for Valentine's day, referring to the over-commercialism.
1: Hey John, what're you getting your girlfriend for Valentine's day?
2: Nothing, we don't celebrate Hallmark Day.
1. hallmark day
AKA Valentine's day.

Used to reflect the commercialism of this extremely pointless "holiday".
"Hey, John, what're you getting your girlfriend for Valentine's day?"
"Nothing, we don't celebrate Hallmark Day."