I feel like I need to let this one out. I don't interact with any of the school mums except a hello here and there, I just drop my son off and off I go. Any way a car was waiting on the left so I waited for the cars on the right to come out of the school, then one of them waited back and I gestured her to come first.. My god, I read her mouth "what the duck, stupid bleeping witch", then as she drove past me she put her finger up and said "what the duck is the matter with you". I feel a bit shocked tbh, I didn't do anything wrong except wait for the cars on the right to come past as the obstruction was on my side, I have to wait. Going to feel awkward if I end up facing her again.