Sending XXX pics, solicited or otherwise, is a severe offense in all 50 states if the sender or receiver is underage - even if the person in the images is an adult.
Whipping out your junk in public to someone nonconsenting is a crime. The line between what is allowed and disallowed in sex is drawn at consent. Some guys like anonymous sex and will meet up from a dick pic - no face needed. Send one via Grindr and you may get blocked. Unsolicited XXX pics are the subject of endless debate.
