What is a closer? A closer is a sales term for someone who always gets the job done. And that is me. A B C, always be closing. Glen Garry, Glen Ross. 'Hey, gimme the Glen Ross leads.' 'No way, they're just for closers.' 'Do you know who you're talking to?' 'I'm Michael Scott.' 'Really? Well, take any lead you want.' 'No thanks, I don't need 'em.' Because I have a client list right here in my computer. So suck on that.