Well, the doctor tells Ned to take off his clothes, and he does most of the scene in nothing but his underwear. But, due to the nature of the beast, realistically, she'd have to examine *everything* because she's looking for signs of STD's. So they went all out. The way the scene works is that they get into a very high-stakes conversation during the exam, and sort of just keep talking and arguing through it all. So Ned whips off his clothes, already mildly enraged, and even while he was standing there totally naked, he just kept ranting.
A work of art is an invitation to love.