Sorry, I meant a condition which causes speech impediment.
Source. I met him at Strong Style gym in Ohio. I suspected he had it as my cousin had the same thing. Certain words he had a tough time pronouncing. It's basically the band of tissue that tethers to the bottom of the tongue's tip to the floor of the mouth. It's too thick and hasn't released properly as a child, which doesn't allow the tongue to stick out as far or operate 100% thus making speech difficult. Surgery can be done to improve or in some cases fix it completely, but most people don't do it or know about it.