It can also be called an assjob or butt-job. Sometimes considered a form of "outercourse".
I believe it's more common among the religiously repressed communities.
LOL. And I have to agree. I think it goes back to grammar school days when as boys start to approach puberty there is a constant conversation about fucking girls. Every possible sexual activity is joked about using the most crude terms available. And I have found that no matter how old they get, males still talk about sex like they were teenagers. Two really old guys sitting in a bar. A young woman walks by that could be their granddaughter and they can still have a conversation about wanting to fuck her and how they envision doing it.
One NO NO is try to avoid having one of your shooting ropes to reach her hair. There seems to be a big taboo of even a bit of semen in the hair.
This is because it’s a pain in the ass to wash out, but if you time it when she’s planning to was her hair she might not mind as much.
It's because you have to wash it with cold water. Hot water will basically cook semen and make it much harder to wash out.