Sex

Sexual intercourse, or just sex for short, is an act of physical intimacy and the means of biological reproduction.

History
Sex most often occurs between two people who are dating. Once they are close enough they initiate the act. This can occur before or after marriage depending on the their religious beliefs.

Flash Thompson and Felicia Hardy were intimate on some level. Upon seeing Doctor Octopus, with his four metal arms, she noted that Flash was "all hands."

Background
Being made for children, sex was never named nor specified in any series. It was implied several times.

In the episode, Tony Stark and Veronica Benning are introduced with the implication that they are having sex but it is actually physical therapy.