Tania Albertini's Golden Rules of Eating
1. if you eat it over the kitchen sink, it doesn't count.
2. if no-one saw you eat it, it doesn't count.
3. if you eat it off someone else's plate, it doesn't count.
4. if you eat it in the car, it doesn't count
5. if you eat it while standing, it doesn't count.

Thanks Tania.  They are brilliant.