Your mom may have warned you to never shake a can of pop, but mom doesn't always know best.

You might want to give your can a rattle — to see if anything unexpected is lurking inside.

Image via YouTube

In a video posted Friday by YouTube user Nigel Goodwin, a man makes a disturbing discovery inside a can of IZZE sparkling juice.

"There's something in the can," the man says, shaking the can. "I'm gonna open it and see what it is."

Image via YouTube

He pours out the contents, and something plops out.

As the bubbles clear, the object comes into view: a rusty bolt.

"It was...this screw," the man says. "It was inside of the can."

Image via YouTube

IZZE did not immediately return a request for comment from TheBlaze.

Watch the man's discovery below:

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