When two adults with kids get together bundling half and step brothers & sisters together with not a lot on common, so they have a baby to glue the family together. A glue baby.
#: What do you mean your brother and sister have the same mum and dad as you?
#: ahhh, one comes from each, I'm just the glue baby, I hold it all together.
During intense sexual intercourse, Elmer's school glue is squeezed into contact with the penis/vagina. This eventually slows the rapid thrusting and thus calms the mood.
I fucked this one girl, but with the rapid movement, my dick started to burn. I had to pull off a glue baby.
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)