It's a corollary to the "Anybody driving faster than I am is a crazy maniac - anybody driving slower than I am is a timid menace" kind of thinking.
"Any man better at household chores than I am is gay."
I am a pretty good cleaner when I put my mind to it, but very much slower than my wife, because I always end up taking things apart to clean them. Right now the upstairs bathroom toilet is in pieces, sitting in the hallway.