Should i get a tattoo? or should i do what my mum wants?

Your 22? Do what you want bro. I wouldn't recommend a tattoo on a part of your body exposed to the rest of the world, if you plan on having a career where that sort of thing is frowned upon. But if you want it get it. I got my tattoo when I was 16 with my parents consent and a notary. I'm 21 now and still don't regret it, I'm also glad I got it on my arm not my wrist.