A not normal noun or pronoun. weird is a way that something is doing what it's supposed to do not normally.
guy 1: hi...... nothing to see here.
guy 2: you're acting weird!
guy 3: yeah!
guy 1: what?! no, how?!
guy 3: you're saying weird things.
guy 1: like what?
guy 2, who interrupted guy 3: like nothing to see here.
the best YouTuber ever (in my opinion) he plays Minecraft hermitcraft he also makes a lot of Minecraft Redstone videos
person 1: are you subscribed to mumbo jumbo?
person 2: no.
person 1: why go ahead and subscribe.