I know because I've worked in lots of programs and I've been around.He's a former cop who's been around the block and knows what it's all about.
been around (the block)
To have experience, either in a particular area or in one's life overall. Yes, the new hire is young, but she's been around the block. She was managing a whole department at a prominent PR firm before she came here.Your aunt might seem boring these days, but she's been around—she went to Woodstock as a teenager!
been around (the block)
phr. sexually experienced. He’s just a kid. He hasn’t been around the block yet.