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Definitions by Wendigo45
Derp helmet
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A piece
of protective head
gear
that police place on self
destructive
detainees to prevent self injury.
"Aw jeeze, she's
banging
her
head
in the back of my cruiser. We gotta put her in a derp
helmet
!"
Derp helmet
by
Wendigo45
November 5, 2025
Get the
Derp helmet
mug.