An event kind of like a blue moon, something that doesn't happen very often.
An offer that you can't let go cuz it won't be as good of an offer the next time, if it's even there.
A really hot male or female who is way out of your league that you've admired all your life is a little bittipsy at a party. And suddenly they find you attractive.
Dude, Sheila is all over me.
You better take advantage of that, this is your Black Friday come early.
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)