The art of printing off a picture of someone online, cutting a hole in same, and using this for placing your penis in while you masturbate. Or, for women, cutting a hole where a mans penis should be and placing her dildo through same.
One thing to note about a holeing that separates it from traditional intercourse is that neither oral/fore -play is prerequisite. This generally leads to a rather "rough-and-tumble" atmosphere where each and every relational dispute will find resolution in some hole or another.
Steve: Martha, could you check the calendar and see when our last holeing session was?
Martha: Well Steve , it says a week ago but I'm still having troublewalking!