1. Something that makes you scratch your chin.
"My beard is a chin scratcher."

2. Something that is puzzling.

"Crafting recipes are chin scratchers"
by _honest_indian_ March 2, 2015
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Being purposefully over-arty.
Fuck all this chin-scratcher bullshit, let's get outta this goddamn art gallery and get some beer
by useful idiot January 4, 2005
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