Wow overprotective of the sport I see lol...
Do you honestly think I would do something like that? In all respect it's not as though I'm giving people ideas what to do with their spare time, certainly if anyone had intent in harming you guys in the Spiderman suits they would be more likely to do it out of rage on the spot with their vehicle. That or throw something random at you.
Really how practical does it seem to pick up what would end up weighing 50 pounds being filled with heavy vegetable squeezings from wherever in the car you store such things, somehow aim this 3 foot long vegetable gun out one of the windows and accurately using it without crashing the vehicle you're driving or running over the animals in the roadway. They also don't tend to hold a prime very long so you'll probably have to pump it on site.
I guess you could carry a small one around too, but you'll still need to get aside of the heard so as that you can actually hit them with the vicious stream of slippy slidey. If you are doing it from behind like most of us prefer you'll be doing it at 15-20 mph so you're watergun better have a hard spray, because if not it's going to blow right back all over the front of you.
All that aside if you manage to pull it off please be ready have a hot, oily shootout with the also hot and oily police officer who will inevitably pull you over for being a F****** IDIOT.
All due respect but since we are on the topics of f***ing idiots I should mention that you would need to be one to think I was serious.
Anyway how about a secret compartment filled with vegetable oil that you can pull a secret string on, and when you do it dumps the oil into the exhaust as to make a horrific cloud of choking smoke that would put any wild pack of skin tighters at bay.