Examples at The Guardian:
Managed to stop white van full of men mid-catcall by shoving a big powdery donut into my mouth then smiling with mouth full.In my view, the best response to anything involving a stranger on the street is to absolutely ignore it, and in most social situations it's a look of pity or a glance upward with the half shake of the head that means I'm going to pretend you didn't say that.
Guy on train after I asked him to move his bag off seat: "Why don't you grab my cock?" Me: "I didn't bring any tweezers."
A friend heard a guy shout 'Sit on my face!' at a girl who replied 'Why, is your nose bigger than your dick?' AMAZING!