Some guys have a tendency to want to normalize their personal preferences so at to feel less alone about them- but in doing so that make generalizing statements about the entirety of the male gender that may not be true and may be unfairly portraying other men in a bad light or inaccurately. It can be really strong opinions like “All men would cheat if given the chance” or “All men want to have children” or “all men prefer a stay at home wife over a working partner” or it can be really simple things like “all men think sports are cool” etc. anything you want to talk about. Just a generalization about the male gender that is commonly said by other men that you feel misrepresents you.