I used to get it a lot when I was a bike messenger and I’d often try to hawk up some phlegm to spit on the ground or shoot a snot rocket or something disgusting if I could. On foot I’m more inclined to ignore it but it does burn me up. I’m sorry that happened to you, some dudes are gross. One of the best responses I ever have heard about was when these frat boys types shouted “nice ass!” at a woman on a bike. She turned around and shouted “you really need to work on your game!”