Okay kiddo, have you ever been to a place that looks kind of run-down or old, but is really cool and fun to go to? That's what we call a "dive bar!" A dive bar is a type of bar that is simple and not fancy like some other bars you might have been to.
At a dive bar, you might see some things you wouldn't expect to see at other bars, like stickers and posters all over the walls, neon signs or old beer cans on shelves, and maybe even a pool table or darts board.
The drinks are usually cheaper than fancier bars, which makes them a popular spot for people who want to hang out with friends or meet new people without spending too much money. You can usually get classic drinks like beer, whiskey or vodka, and if you're hungry, you might be able to get some simple bar food like burgers or fries.
Dive bars are known for having a laid-back and friendly atmosphere, where everyone can relax and be themselves. It's a place where you can have fun, maybe sing along to some old rock songs, and chat with people you might not have met otherwise.
So, that's basically what a dive bar is, a chill, no-frills kind of bar where people go to have a good time without breaking the bank.