Yesterday, Joshua was telling me about his finger, how he got a cut on it. From a distance, it sounded like he was saying the word properly. But when he got up close, that’s when I heard it:
“See, Dad. I have a cut on my thinger.”
“On your what?”
“My thinger. It’s next to my thumb.”
Thingers and thumbs.
already & not yet 
I can’t even believe that you put the word “thingers” in your title…I have corrected Lawson for saying that instead of fingers AT LEAST four times today alone…it has become one of my worst pet peeves….and for some reason he will NOT say it correctly! I have noticed it in the last 3-4 weeks, and it drives me BONKERS!!
That’s hilarious. I wonder if they got it from each other. Maybe they have like a secret code language or something. That would be fun!