How do you fail a urine test with a clean sample?

Poop in the specimen cup.

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Fail Jokes More Fail Jokes

How did the failing Heroes of the Storm player apologize to their teammate?

I'm gonna level with you.

Why did Chewbacca fail his driving test?

He made a few Wookiee errors.

Poop Jokes More Poop Jokes

What does poop have in common with the Boston Rioters?

They're both revolting! *Baltimore. I clearly don't know my B-Cities.

What do you call a sarcastic man who steps in poop?

Feces-tious