Sexual activity between members of a step-family. Nowadays, it most often refers to a sexual relationship between step-siblings. However, it can also refer to a relationship between a step-parent and a step-child.
-The two of you aren't allowed to make out with each other! That's incest!
-Correction, STEPcest. Just because our parents are married doesn't mean we're related to each other.
-Yes you are!
-Not by blood! We're step-siblings. Emphasis on step.
Yeah, somewhere in the next room Dick and Barbara are huddled together, worried that they could get a divorce JUST LIKE Bobby Fitster's parents and worried that it will make it really hard for them to have hot stepcest sex.
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. PenguinBooks,1992. p. 38)