A form of sexual intercourse especially designed for men with extremely small cocks to satisfy someone by penetrating the nasal cavities with their 2cm defeater.
It can also define someone putting their nose up someones ass.
When your best friend is passed out, and you get his girl friend to do a bridge over top of him with her ass above his head. You then plough her over top of your best friend with your sagging nutsack slapping his nose.
drew: "yo look, brandon passed out on the kitchen floor"
riley: "key, let's get sarah and give him an israeli nasal slapper!"