https://www.urbandictionary.com/define.php?term=aLtErNaTiNg+CaPs&defid=14004887
The texting way of being sarcastic. Google "Spongebob Sarcasm Meme" for an example.
Idiot on the internet: Why is everyone typing in alternating caps. Internet: WhY Is eVeRyOnE TyPiNg iN AlTeRnAtInG CaPs.