Sometimes, the sharks are seriously out. For this list, we’ll be looking at times when either individual Sharks or the whole shiver turned down a contestant’s idea in a bare-knuckled fashion. Our countdown includes pitches from companies "Cougar Limited", "Esso Watches", "MinusCal" and more! What is the biggest scam you remember seeing on the show? Let us know in the comments!

Check out these other "Shark Tank" lists:
Top 20 Rejected Shark Tank Pitches That Became Successful: https://youtu.be/Jrl2YfX5_-Q
Top 10 Shark Tank Products the Sharks Regret Taking: https://youtu.be/DnjVAWkEvA8
Top 10 Biggest Arguments on Shark Tank: https://youtu.be/0_USLBQy5UM

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