Fast Way to mark Outlet Boxes for Drywall

You want to know an accurate way to mark drywall for outlet boxes. Look at that

Here's what it is. Here's the outlet box I took and put a sponge

I spun some water onto the back of the drywall. You can see it right here

I let the water sit for 30 seconds and then I put the drywall against the

outlet branding position. Took a rubber mallet on a piece of plywood boom

boom, boom, boom, boom. And that's the mark you get. Now, all you gotta do is cut it out