Shirt Boiler

[l_h_kings]

What does it mean to call somebody a shirtboiler? I'm not sure if I have got confused and this is a nickname for someone, or if it is a insult? Any Ideas? (ps the person who has been called a shirtboiler wears comical ties, not sure if that is relevant!)

[ezapf]

Never heard it before, but I think I will begin using it this way:

Remove the first R and change OILER to AG.