Suits, ties, any kind of men's formalwear. I used to think what I didn't like about them was the formality and the association with certain not-always-trustworthy professions. Now I realize it had less to do with formality (After all, I love formal dresses!), and more to do with gender.
And like you @KymmieL anything tight around the neck, feels like I'm being choked.
I was never a fan of the cargo pants/shorts trend either, but for me I think that's more just stylistic preference.