12 minutes in the movie, we see Malcolm McDowell's balls under his shirt.
20 minutes in the movie, we get a partial view at Malcolm McDowell's butt, as he is scratching his butt. His undies are showing a nice bulge.
27 minutes in the movie, Malcolm McDowell is naked but the scene is very rapid, and you need to pause to see Malcolm McDowell's uncut penis and butt.