Seriously though, blurred glasses seems like a recipe for a nasty headache. You would probably be better off with nothing, like eye covers for sleeping.
A pair of off-the-shelf reading glasses will make everything other than what's right in front of your face blurry. But please don't use them to blur distant things you actually will be looking at for long stretches. Your eyes will still try to focus on those blurry distant objects, and that will cause ocular muscle strain. If you did it for a few years, you could cause permanent changes to the shape of your eyeball. Then you will really need glasses.
Glasses with wrong strength should focus the incoming light wrongly and therefore effectively blur things.
If you can, I'd recommend trying out someone else's glasses. It can give people headaches when their vision is blurry, because they'll try to focus their eyes really hard.
You know what happens to the glasses that used to work, but no longer do because your eyes have changed? People archive them to the bedroom drawer just in case someone like you might one day show up. Ask anyone who wears glasses for an old pair they haven’t worn in the last decade. Usually, you get to choose from several options.
BTW, the headache thing is real, but you’ll learn that soon enough.
Used to do this to my shooting glasses, just put Scotch tape on my non-dominant eye so I could leave it open while shooting open sights.
I'm "wrong eyed" so my brain always tried to look down my gun with my left eye. The tape solved it. With practice I can now shoot well with regular glasses, though it's still more comfortable to use taped glasses.
Don't listen to the wrong prescription talk as it will hurt your eyes. Tape is cheap and safe.