What is "Hammertime" a reference to?

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When the "knockdown" status effect is applied, text appears that says things like "whoops", "tripped", or "hammertime".
What does "hammertime" reference? I'm familiar with the M.C. Hammer song "Can't Touch This", but I don't recall there being anything about slipping and/or falling in it.
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STOP - HammerTime in Modern (Azorius style)
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