Ask me any question, and I will answer it in a detailed, funny, but completely wrong information about it. Q: What is Barney Stinson's job on How I Met Your Mother? A: Although the show has never let it be known, he in officially a "business liaison." He is the legitimate guy who goes with the guy who doesn't officially exist and makes sure that all the paper work is signed the right way if things go well and shred them and cover the trail if they don't. Go ahead, ask me anything.