When a guy busts a load into a girls mouth or nose and she then projectiles it out of her nose as a snot-rocket

Adj. Something that is expected to have a long lifespan by virtue of having existed for a long time, based on the lindy effect, named for the New York restaurant Lindy's, coined by Albert Goldman and popularized by Nassim Taleb.

As you're cumming hold in your cum and when you can't hold it in any more let it out and it should skeet rocket out.