Normies just means people who aren’t in the in group and to me means we are the weird ones, exclusive group or have uncommon interests or knowledge.
It is important to be self aware that in the context of the fediverse and meme culture things you are use to are weird, different, and sometimes confusing. Perfect example has been the beans and the 3 day poop thing. Normal people don’t get and will think it is weird if they know nothing about the trend. Another example is I am a rock climber if I reference a jug or a sloper it means nothing to normies or people unaware of the lingo. So a jug joke isn’t something other people get