I'm almost finished with Robert Ludlum's novel THE ICARUS AGENDA, which has two slang phrases in it that have me scratching my head (a lot). "A two toilet Irish detective" is supposed to be American Boston-Irish slang, and I guess isn't too hard to figure out. I still wanna know!
A different word for up, used for supporting teams/people/etc. usually with the word 'the' afterwards if it's somebody's name. Examples: "Scup the (person's name)!", "Scup Louth!"
