There is only so much stupidity and selfishness that one person should be expected to endure without comment and I think you were perfectly justified in what you said. Besides, that wasn't rude, informing the limo driver that he was a pig ignorant moron and you didn't give a flying rats behind if he had the pope in the boot of his ridiculous vehicle, you'll move when you're good and ready and not before would have been rude. As would telling the man who parked in the ambulance bay that chronic ego overinflation and total selfishness are unfortunately not life threatening so he shouldn't be parked in the emergency bay and could take his crap-mobile and shift it before you had it towed away and crushed into Britain's most expensive rubix cube. I love the fact that you told someone that they slap like a bitch, that's fantastic. That's doing rude properly!