The boss said "Jolly good" in a positive way- I suppose the addition of old chap might be a wee tad over the top. A good ironic phrase.

A former coworker used "butty" when refering to sandwhiches- I always wondered if it was derived from "buttered." She had a thicker accent-not "BBC standard." When she said "what'-it is sounded more like Whuh? I think she lived in Liverpool and Manchester

 

Quote - I sometimes say "Jolly good, old chap", but only ever in an ironic sense.  That's to say, when someone's fucked up spectacularly badly.

Yep, "Butty", is a Lancastrian - primarily Liverpool/Mersey now - slang word.  My dad hated it and would never refer to any sandwich as a butty.