- don't put your elbows on the table
- don't argue the toss
- don't forget raise your cap to Mr Turnbull (neighbour who left house at same time I did)
- don't do as I do; do as I tell you
- shoulders back, head up, stomach in, chest out (when walking)
- there's no such word as can't
- don't talk with your mouth full
- find me someone who drops litter and I will find you a criminal
- don't drop your H's
Just to be going on with.
As an aside....one of the rules at my school was that you couldn't take a bike to school until you could swim 25 yards