Barman I once knew use to do the Deb,s shift at the Burlo,when everybody else hated to do it. When asked why he did the trainee drinkers shift he said that he wanted to help them have a good time,so when they asked for a spirit drink and soft drink top up,he would have a dish with the spirit in it,dip the rim of the glass in the spirit,add the ice and soft drink,and charge them for the full drink,he then would ring up the till with the soft drink price. This way he had no trainee drunks,his till and drink stock matched,so evrybody was happy.