I was minding my own business in the gym, deadlifting. Unfortunately it seems to attract a lot of attention from less enlightened people, as while I am female my top sets are still in the range of 230-260 pounds. This particular time, someone approached me mid-set, and when I ignored him, he stood over the bar so I could not pick it up until he had said his piece.
He told me I needed to lean back at the top of the repetition to “make my back stronger”. I told him hyperextension of the back is both bad form and can lead to injury, and went back to lifting with proper form. He stood there for the rest of my set, shaking his head. I guess all the mansplanation I get in the gym is #MFIF for liking to lift big weights.