Johnny blue

n.

Heard in Dublin and Kildare

Brand of cigarettes. The preferred choice of skangers.

In use

What are we going to use as bait for the skangers? Simple: put a pack of Johnny Blue there and let the bear trap do the rest.

Posh English

What bait shall we use for the ruffians? Simple: place a packet of Johnny Blue tubes of the noxious weed there, and let the bear trap do the rest.

Same phrase, other counties