Naughty cornmeal

Just recently my Mother bought some cornmeal and left it on the kitchen counter. After coming out of the shower topless, I walked into the kitchen and saw the box sitting there. I poured some of the cornmeal into my hand and started rubbing it on my nips. I normally wouldn't do anything like that but it felt so good that I continued making quick circular motions. I kept going for 5 minutes until my nips grew sore from the gritty texture. I have only done this once and plan on keeping it that way unless I get a sudden craving again. I hope this doesn't make me weird because this was totally out of my character. But was this one act normal or not?