The overwhelming feeling of sadness and suck that comes "the day after, the day after" a weekend of partying, particularly when using MDMA or ecstacy.
Friend: "I hate my life and I'm pretty sure my boyfriend is cheating on me."

Other friend: "Oh, no, what's wrong, we had such an amazing weekend?!"
Sensible friend: "Relax, it's just razor blade Tuesday."
by hyraxe June 26, 2012
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