I had never used Grok before, seems to work very easy and simple. Didn't try to make any NSFW images yet, didn't want my account to get banned. But I'm sure someone has a disposable account to try that out.
Just type what you want to see: x.com/i/grok
Oh, you can actually also go to grok.com com and use it without an account (just confirm you're 18+)
Here are some images it generated. This only took something like 5 minutes, I'm sure it's possible to create much nicer ones when you put in some more effort