sketchbob squarepants

(adj) Hilarious way to describe a person, place, or thing as suspect, questionable, unsafe, dishonest, or disreputable. A play on words that nonsensically incorporates reference to cartoon character, Spongebob Squarepants.

synonym: sketchy

Whoa, duder! That wiring harness under your car looks sketchbob squarepants.