The mathematical brain rot is real. In mathematical notation, |o| represents the absolute value of o, which is just o itself since it's positive. So "lol" becomes "laughing out loud" to normal people, but "absolute value of o" to those of us who've spent too many nights with calculus. The brain simply can't switch back to normal human communication. Next thing you know, you'll be seeing integrals in your breakfast cereal and derivatives in your coffee swirls.