Well, duh, that's because you used it in a non-gender-neutral way. If you said, "hey you guys, raise your hands", then that is way more gender neutral. Like all

Well, duh, that's because you used it in a non-gender-neutral way. If you said, "hey you guys, raise your hands", then that is way more gender neutral. Like all of language, differences in meanings can be subtle. They can also depend on where you are from.