learn to milk the prostate (trust me this is the right path) or, if you want it to be a slow progression to doing that (because it will happen eventually), shoot it straight into your open mouth. You'll be forced to either swallow or do a big stupid uncomfortable roll over while spitting cum allover yourself lol
Just make sure you research materials. In the US at least there is no regulation on sex toys, most are labled as novelty. Don't get a brand that doesn't take itself seriously. I had some butt plugs that would burn a little after ~10 minutes of use .