Hi there. This is very interesting. The same things has happened to me.
I knew a girl when I was young and that I used to shook her and wrestle her down on the ground when we both were wearing rukka raincoats.
She seemed to really like it. And I liked it too. Also She liked I made her raincoat dirty with mudd and stuff .
She also shooked me and wrestled me. But mostly It was I who did it to her. We were doing this both outside aswell as inside.
In school the other kids thought we were wierd often dressing in raincoats and playing "odd"