In PVP video games, to peel is to divert a focused attack away from your allied member.
For example: You're playing League of Legends, and your enemy team repeatedly attacks your support team member. You use crowd control abilities and spells to stun them, stop their movement, ect , so you're support may escape or continue helping you. This is the act of peeling.
When you’re body starts sweating and your jungle gets moist you’re body begins to peel. The act of ones scrotum sticking to their leg causing them to peel the scrot off of their inner thigh typically making a sensory appealing sound whilst the testicles are removed from the hamstring.
Brad: damn chad it’s getting pretty warm out here. You peeling?
Chad: yeah bro I’m peeling like a musty pirate on a humid summer day!