Creatively showing a person or a group of people one's testicles and/or penis.
Friend 1: Hey let's go nutting!
Friend 2: Yeah, we can get my little brother and his friends.
Friend 1: That's a good idea. We can have someone call them to meet them somewhere and we will be their waiting.
Friend 2: That's when we will pull down our pants and nut them.
Friend 1: This will be sweet!