Do The Police Conduct Stings for Sex Offenders on Kik

My question involves criminal law for the state of: Pennsylvania

Okay so my cousin is dumb.
He was talking on Kik in this group chat and this group is a 18+ only chat. So someone came in and was asked their age. The person said 18. Then this person asked in the group"is anyone looking to trade pics?". my cousin decided that he was down and sent a private message to this person. they talked and my cousin asked for nudes. the person said "You first" and my cousin obliged with nude pics, not face just the private parts. Now the person he messaged has not messaged back at all. Anyway he wants to be put at ease so my questions are: is this a cop, or could it be a cop? even though they said they were 18 and there is proof they said they were 18 could it still be illegal?, and is he worried over nothing? I would like to tell him he can relax. He is mostly worried because he did not get a response in any way.

This happened about a hour ago from tonight and my cousin is 18.
thanks.

The police can search for sex offenders anywhere they want, including sites like chatroulette and apps like kik. Nobody here can predict the future for you, and with second-hand information there may be more to the story than you are aware.

If you don't want to risk an embarrassing arrest, rather than sending or trading naked pictures with people you don't know, keep it in your pants.

More than likely, the recipient simply wasn't impressed with your cousin's junk. That or they just troll around collecting pics of people's junk.

It's unlikely it's a cop. Might be a scammer who will have someone contact your cousin in a few days threatening to call the cops for sending pics of his junk to their minor (not really) child. Your cousin needs to quit sending strangers nudes.

That is great advice.
But would it even be a sting if in the group chat the person said they were 18 and in the private chat they said nothing?

What IS IT about some guys and their seemingly unceasing desire to photograph and electronically transmit their junk?!?!

That said, I concur with Free9man - it's not likely a cop, and more than likely someone working a scam. Tell your "cousin" to try and meet people the old fashioned way - go out. Date. Get to know them. At least that way he could put a real face to the pictures of private parts (as asinine as that idea remains).

Your cousin is an idiot and if he keeps sending pictures of his junk to random strangers when he has no idea who they are, he's going to get caught in a sting or a scam eventually whether this one was or not. And no, it won't matter a damn if he can "prove" that whoever it was said he, she or it was 18.

You can tell him I said so. Including the idiot part. I take that back. ESPECIALLY the idiot part.