Formed from "pre-" meaning before, "marital" meaning marriage, "inter" meaning joining, "digit" meaning finger.
Often is used by someone to give another an awkward scare because it reminds them of premarital intercourse.
Mom: So..have you and Jake had premarital interdigitation?
Daughter: Oh yeah! On the couch, on the bed, on the floor, in the kitchen, at a restaurant, looking at the stars, on a walk, ...etc.
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)