xd" / "XD

The answer to an unironic use of the smiley xd/XD.

Dave: come play on my Minecraft server, it has all the best plugins XD
Carl: "XD"
Carl: I'm not gonna play on your stupid server, grow up.

"XD" / "xd" is most commonly used when you are unfortunate enough to be speaking with 12yo kids - be it on the inside or outside,