The 15 worst 'Shark Tank' pitches of all time

Hundreds of entrepreneurs have pitched their companies on "Shark Tank" since the show debuted in 2009, but some of the most memorable pitches are the worst ones.

They stand out for different reasons. In some, the products are totally infeasible. In others, the entrepreneurs are completely unprepared or so arrogant they don't have a grip on reality.

In anticipation of the seventh season premiere on Sept. 25, we've gathered the Sharks' least favorite presentations as well as our own picks for the worst pitches in the show's history.