What happens if you show off your penis at Omegle ?

Your brain shrinks a little more. I doubt you can afford to do so.

If you are underage, then it's considered producing child porn and you might get arrested. Regardless, it's very likely that someone will capture the video and post it online for anyone to see.

Omegle is the most perverted sausage party on the internet

you'll get banned

Nothing unless you show it to a minor and it gets reported.

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