Frosted Glas

I have been to a Rest room in a pub today. There was a window with frosted glas. Right in front of this window I could hear and See a group of 4 or 5 girls. I took care that they could see my dicks shape and size. 1 of the girls Infront of this window told her friends "it was obvious that he is small". Later in the pub they stould next to me and I am sure they realized it was me whom they had seen. Should I have Talked to them? It felt great to get humiliated this way.