why 5? to toughen them up?
http://en.wikipedia.org/wiki/Drinking_age
"The legal age to purchase alcohol is 18. Children aged 16 and 17, with the licensee's permission, may consume wine, beer or cider with a table meal in specific areas of the premises providing they're with an adult and the adult orders it. Children under 14 are not allowed in pubs unless the pub has a children's certificate. Children aged 14-17 can be in pubs but with adult supervision. The purchase of liqueur chocolates is 16. The legal age for drinking in one's home is 5 provided parental consent is given. Children under 5 must not be given alcohol unless for medical or religious reasons."