It is when two men perform sounding with a double ended object (putting a smooth blunt object into the urethra) but also performing docking at the same time (interlocking each others penis with the foreskins.
the end result of a bad minch can be called a blood sausage.
I've been minching so hard with Tom all night, now I have the worst blood sausage.
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)