Do you mean a public bar that has a speakeasy theme? Google it. Or do you mean an actual speakeasy/unlicensed bar?

There's a lot of unlicensed bars in southwest Baltimore. Some hookah, some weed friendly, some just liquor bars. You have to know someone to take you the first time because it's usually in the basement or second floor of a rowhouse.

Not to be rude, your friends sound like assholes. The whole point of a secret bar is to share it with your friends. No regulations. No dealing with crowds you don't like. Smoke cigars, weed, hookah inside with your friends and chill. Whatever. If your friends talk about doing all this but then don't tell you where and don't invite you. EITHER they're assholes who are showing off in front of you because their assholes and not friends. OR they don't know what they're talking about and making it up.