What is a sexcam?

Yesterday, my colleague sent out a link to us and ask us to read the story. The story is about this guy whose gf cheated him. She has sexcam with another guy in the cyberword. Yaa daa yaa daa...

Then this cute little innocent colleague of mine was puzzled and asked, "What is sexcam?" Then Shaowei answered her by saying that it's playing with your own organs infront of the computer. Hahaha. Then she is even more puzzled, she kept mumbled... "How to play when the person is not infront of you?" Haha. What an innocent question she asked.

LK!! THIS IS CALL SEXCAM!

You don't really need to "play" with anything, I think basically you just take off everything and sit infront of the webcam with another person is also consider as sexcam? Hmmm... I'm not sure either. LOL.