How many donuts are in a dozen is not variable. Every donut past the mark is a bonus. At sleazy donut shops you can arrange to receive bottomless donuts. But then you have to eat them all, including the holes.
Stand-up comedy dressed like a doughnut. A talking doughnut. Jelly filled. Sugarcoated. Donut laugh.
The donut stripper left sprinkles everywhere.
In states where it is legal to do so, donuts are commonly fried.
The donut guru smiled and said I, dough-nut, know.