Many of us on platforms like this are introverts, or autistic, or have social anxiety, or for whatever reason, have trouble meeting new people or engaging with strangers. If someone wanted to engage you in conversation, what topic would you be happiest to talk about?
Forearm would probably look good, or shoulder! My tattoo is on my shoulder but I plan to get more. I guess it just depends if you want/have more. Or if you want to be able to hide it. Shoulder is easy to hide. I regret that mine is so well hidden.