Travelled!! I thought I was the only parent in the world who had to suffer the "I was going to do it, but because you keep nagging me [asked me twice with a day inbetween], I won't do it now."
How the hell can we ever win with that logic? Don't ask them, they don't do it. Ask them once, they'll "do it in a minute" (ie never), ask them again and you've blown it.
I realise this sounds incredibly pathetic & people will say "just tell them, and don't take any crap" - I know this is the answer, but it doesn't make the reality any less wearing or frustrating.
Having teenagers has given me the longest fuse in the world, cos I learnt that screaming and shouting and showing my frustration is just counter productive.
Doesn't mean I don't feel it though...