What does Billy No-Tabs mean?

Billy No-Tabs meaning in Urban Dictionary

A non-smoker out consuming in a pub with a team of smokers who is left alone, appearing like a Billy No-Mates because each of his mates have now been required outside by-law to own a smoke. Billy No-Tabs will frequently consider taking up smoking cigarettes purely in order to prevent being remaining alone viewing a load of half-drunk pints. Are often called Billy No-Fags or Norman No-Smokes