You know, when you’re making the bed, and you’re preparing the sheet, you stand at the foot of the bed and quickly raise and lower the sheet, causing a waveform to propagate up to the head of the sheet, resulting in a sheet thet is smoother and more correctly positioned?
Is there a verb for this manuever? Something like “fluff the sheet” or “wave the sheet” or something like that?
“Flinging your sheet”
Snap the sheet
George
“The Cat Toy”.
Because that’s usually the moment when the cat comes flying up onto the bed to pounce on the waves…
This is the one I would use.
Thirding “snap.”
Up until now I would have said “snap” but i find “flinging your sheet” a lot more amusing. I have the sense of humor of an 8 year old.
Kitties love when the sheets get changed. I don’t think I’ve ever changed the sheets on the bed without also saying, “You are not being helpful dammit!”
I call it settling the sheet. How mundane.
I normally wind up saying “Sorry [dog] didn’t know you were there” as one of them goes airborne. Can we call it the Dog Flinger?
I call it the “Dammit cat!” move, but when we were catless it was snapping the sheet.
The title of the thread sent my mind to bad (good?) places.
I call it snapping the sheet.
Interesting question. It never occurred to me there was a name for it.
If your in a roach motel / bed and breakfest in Mexico and you are doing it to fling dirt off the sheets its a “dirty sanchez”.
If you are in a superhero/superscientist lair and you are doing it to get the last of the wrinkles out its a “rusty venture”.
I call it “the applied science of using a standing waveform to straighten the bedsheets”. Well, that’s what I call it in Nerdville, where I live.
Otherwise, yeh… snapping, although it is more like flinging. It’s an art, really.
Well since the movement of the sheet is a vertical one to get it started and then proceeds horizontally, we don’t we call it a vertizontal? 
Anyone else think this thread was going to be about something entirely different?
Yeah, I sure thought it was going to be about something else. I can’t say I’m not just a little bit disappointed.
Count me in with those calling it “snapping.”
My friend had the horrible misfortune of snapping her sheet and hitting the fire sprinkler on the ceiling. It set off the alarm and all the sprinklers in her apartment, causing thousands of dollars of water damage.