Masturbating in Tights

This is one of my favourite techniques for masturbating in public without getting caught. I like to slip on a pair of cheap tights which have a centre seam and no gusset (the ones you get in multipacks from Boots are the best), under a pair of trousers without any knickers underneath. When I'm feeling horny on the train commuting into work I give the waistband of my tights a gentle pull through my blouse which pulls the gusset seam up betweem my pussy lips and the cheeks of my bottom. I then slowly keep pulling on the waisteband and the tights rub againt my clit until I come. This is quite discrete as my hands are nowhere near my pussy. I also get turned on by the glances I get from men staring at my stocking feet as I slip them out of my shoes.