When you're either too
lazy to type out "your"/"you're" or your
grammar sucks so badly that you put "ur" and
hope the other person knows which one you're talking about.
Stacy: "omg, ur not gonna believe what Brad said to me"
Kevin: "
Bro, your
grammar sucks, go to English class every once and a while you
dumb wench"
Stacy: "How did you know?"
Kevin: "😐"