I rekon - I reckon is when you're too lazy to think but still pretend

I reckon is when you're too lazy to think but still pretend you know what's going on.

I reckon it's gonna rain. I saw a cloud. It looked bored.

I reckon that pizza was good. It wasn't bad. It just wasn't great.

I reckon I'm gonna fail this test. I didn't study. I don't care.