When you look at something like Borat's swimming suit, it is ridiculed specifically because it is sexualized. However, for men that swimming suit generally results in a negative sexual interest, and it's why you hardly find men wearing it. In gay parades you find plenty of men wearing ultra tight shorts, specifically because they sexualize. How can't they? They are specifically designed to highlight the genital areas.
As a second point about breasts, human breasts are unique in the animal kingdom because they are specifically made to signal sexual availability. Generally animals do not have enlarged breasts, even when lactating. In humans the woman breast evolved to enlarge when sexual maturity is reached to signal sexual availability. So saying that boobs are just a body part that men sexualize is also incorrect.
As a second point about breasts, human breasts are unique in the animal kingdom because they are specifically made to signal sexual availability. Generally animals do not have enlarged breasts, even when lactating. In humans the woman breast evolved to enlarge when sexual maturity is reached to signal sexual availability. So saying that boobs are just a body part that men sexualize is also incorrect.