My Dh made me feel a bit guilty at the time and said "don't be nasty".
We were walking across the carpark and a man started to reverse his car after we had already started to pass him. He saw us, had no intention of stopping so I just called out "we're behind you".
My Dh thought it was nasty of me, I just thought at the time surely it's better to let people know when they're doing something dangerous.
Was Ibu and nasty or was I right to have said something.