Panty Orgasms

I like to sleep in just my panties and recently one of my girlfriends gave me some blue silky ones for my birthday. I wore them in bed that night and they were a size too small, as I lay there the crotch rode right into my slit and began to get me horny so I fingered myself through the panties until I was wet then I brought myself to orgasm by tugging the wet silky crotch tight into my pussy. Whenever I wear those panties now I am always wet as the silky crotch rubs me.