I got thinking about what constitutes sexual assault. Sort of a back door approach to looking at what is sex. So per the Wikipedia

Quote Originally Posted by Wikipedia
What constitutes a sexual assault is determined by the laws of the jurisdiction where the assault takes place, which vary considerably, and are influenced by local social and cultural attitudes.

It has been said that sexual assault includes rape, forced vaginal, anal or oral penetration, forced sexual intercourse, inappropriate touching, forced kissing, child molestation and the torture of the victim in a sexual manner.
We also say masturbation relieves sexual tension, so doesn't that make it a sexual activity. On the other hand, when I go for my annual Gyno exam and get asked if I have been sexually active, they don't want to know if I masturbate.

No answers, just food for thought.