To state something as fact, that you just made up. Or to convince someone of something you don't actually believe yourself.
Does he actually believe that, or is he just talking Christian. Susan said she was going to pay me back, but it's obvious she was just Talking Christian.
Ex.1) "Hey have you seen my boyfriend!?"
"I think I saw him with Ashley talking boots, you deserve better."
Ex.2) Friend 1. "I don't know what to say I never had a date before"
Friend 2. "Just talk boots with her bro don't overthink everything."
Next day Friend 2. " How did the date go, get any?"
Friend 1. "No you morron she just stopped talking to me and left after I kept talking about boots and how they are made, for half an hour. Neather of us were even wearing boots!"
Friend 2. *Facepalm*