Good for some dumbass. A term used loosely to say sure <sarcasm> have fun <same> or even go screw a wild llama on the plains of Africa with a llama poser on your monkeys brain potion.
"I eat monkey meat" Francis (not you, goes to Glasgow)
"GFSD!" Nathan (might just be you! Wow!)
Fogey/fogy /fougi/ sl. (early 18C+, orig. Scot) old-fashioned, stuck-in-the mud.
Person with old fashioned ideas which he is unwilling to change: Come to the disco and stop being such an old fogey!
You think me an old fogeyand an old tory, his thoughtful voice said. I saw three generations since O’Connel’s time. I remember the famine. Do you know that the orange lodges agitated for repeal of the union twenty years before O’Connel did or before the prelates of your communion denounced him as a demagogue? You fenians forget some things. (James Joyce, Ulysses. Penguin Books,1992. p. 38)