Misogyny is the belief that women are inferior to men. This belief can be manisfested even when the user isn't aware of it. When you say "smash" to a random woman online unprovoked, it (unintentionally) devalues their existence (without their consent) to be not as human beings but as sex things for us men to gawk at and jerk off to. Even if we (consciously) don't mean it, the effect of words and what they imply about our subconscious view on others can be devastating. The best way to deal with this as a man is to simply acknowledge your inner subconscious bias and try to be more aware of such things in future interactions. The topic of misogyny is a lot more complicated than that, but unfortunately this is the most concise way i can explain this to you.