Someone who wants to be a tattoo artist but doesn't want to tattoo. They will tell everyone they are a tattoo artist but will only tattoo the designs they want to do, whereas a real tattoo artist will pretty much tattoo anything on anyone at any time.
They can be overheard saying things like "I don't tattoo for money," and often insult the customer's idea or choice of tattoo.
A space hog thinks that because they make tattoos they are entitled to being respected and or admired regardless of their character.
We went to the studio to get a tattoo but it was just a bunch of space hogs stroking each others ego's and trying to talk us into things we don't want.
I wanted to get a tattoo but some space hog tried to talk me out of it so I left.