I know I'm a bit grumpy at the moment, but was out in a cafe this morning and there was a dad and daughter at the table next to me. Little girl wanted a cake, and dad said no, you've already had sweets after ballet. Fine. Little girl asked again at which point he said "no because I'll have to tell your mum and what will she say?"
There was then a bit of back and forth about well just don't tell mum etc. I was just getting so pissed off on behalf of this poor woman who isn't even there being made to play the bad guy. FFS just grow a pair and tell your kid that she isn't allowed cake because YOU don't want her to have it/ or your rules say so. Don't blame the poor mum!!!