I was in London with work & on the way back to the station stopped off in huge Primark on Oxford Street. A guy came in (60s, short, big belly & beard) and started looking at the women's long trench coats. Next thing he put one on, stuck his hand down his trousers & started having a wank!!!! In the middle of Primark!! First few seconds I thought he had an itch, but nope, he was going for it big style!! I was frozen, just gawping and exchanging incredulous looks with another woman equally 
after a minute or two he lets out a huge sigh, removes his hand and, (oh sweet jesus) wipes it on the coat, the calmly took off coat, put back on hanger & walked out!!! I know I should have alerted someone but 'during the act' I was literally frozen with shock, and after he finished I just felt vile & walked out!!! Has anyone else ever witnessed anything so utterly vile?? Still nauseous....