Just figured I’d add this for the OP, just in case he’s young or naive: Some people are just plain disagreeable . Just because you share a common interest doesn’t make them a paragon of virtue. Some people with huge arms, big tattoos of the grim reaper and other death and violent themes are actually violent or potentially violent criminals who actually got those tats in prison or while they were out at various and usually short periods of time, and may indicate gang or group affiliation.
And most importantly, they don’t care what you think of them. Probably best to keep that to yourself (IRL. On the interwebs it doesn’t matter as much, but even then, you never know).
There has been a lot of confusion created over the past 15 or so years with people getting all sleeved up and decorating themselves with all kinds of ink to look like something (what? I have no idea) that they aren’t, so it’s understandable (to me) that mistakes may be made.
So here’s a guide to help you along and maybe keep you safe IRL.
If you see a group of slim, fit guys with big colorful tats up and down their arms wearing the latest cool athletic footwear, nice shiny teeth and talking about Kipping they’re probably Crossfitters. Relatively safe.
If you see a bunch of big guys with a various hodgepodge of tats that look like they eat babies talking about where to hide the body, that last shipment of meth, the next shipment of meth, Not Kipping, the time they killed that guy, or any additional subjects related to or derived from the previous subjects- Go the other way. They don’t care what you think about a book.
While group one may be having a wine cooler or ultra-lite low carb beer and maybe a vape here or there, group two may be drinking real beer, whiskey, and smoking various and sundry substances by unconventional means. They aren’t looking for any health tips or pointers either. Best keep those under wraps too.
This is just a thumbnail on a pretty deep subject though, so don’t take it as gospel. You might even know some of these things already, possibly better than others.