The action of pulling the pin on a grenade and sticking it up a girl's cooch, especially if she's pregnant, thereby aborting the baby (and her, but that's besides the point).
"Yo did you hear about Stacy? I heard she got a grenadeabortion."
"Bullshit, who would knock her up in the first place?"
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)