According to TV Tropes, "Squick" is possibly a contraction of "squeamish" and "Ick!" A negative emotional response, more specifically a disturbed or disgusted one.

"Squicky" and "squicked" are also common forms, with that very wiki having apparently invented the form "squicktastic".

It is a theme of Random Klips that feature something disgusting in nature.

Klips with this theme

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