Dr. Kelso won free muffins for life in 2007 by correctly guessing the number of coffee beans in a jar. J.D. originally won at first, but a recount crowned Kelso the victor. ("My Number One Doctor")
Kelso likes his muffins warm, so sometimes he keeps them in his pants. He also takes muffins for the road, called "roadies". He has also thrown muffins away just for the sake of it, because he could. He gets his muffins from Donny, an unseen Coffee Bucks barista.