I didnt get into this in a nice way
A very close friend of mine in year 4 (grade 4) was kicked in the balls by a girl at our school because he bumped into her in the hall, so I went up to her and said something like "I bet you wouldnt think it was so funny if I was to do that to you." Her reply was along the lines of "I wouldnt care because girls cant get hurt there" So, I asked her if I could kick her. Her and her friends thougth that that would be a great joke, so she spread her legs and said "Take your best shot" and I did. I will never ever forget the look of utter and total shock on her face as she doubled up and fell to the floor screaming. I consider that consentual as she did ask me to take my best shot