indecent exposure
public nudity

After all, if you sent her your book, isn't that indecent exposure of a kind?

An awful lot of indecent exposure used to go on.

Indecent exposure will do to get them to the station house.

"What you're wearing now would get you arrested for indecent exposure over there."

"I ought to take him in for indecent exposure," he said.

At the time, this caused a stir because of possible indecent exposure.

"If I set you down in the park, you'll get busted for indecent exposure."

I don't want to get picked up for indecent exposure.

I have a feeling she intended to report me for indecent exposure.

He was tried and convicted of a lesser charge, indecent exposure in a public place.