Genuine:
Guy 1: "Dude my mom's so
technologically impaired that if you gave her a
baseball bat and told her to ruin my computer, she would beat the keyboard to death."
Guy 2: "HAHAHAHA dkm"
Sarcastic:
Guy 1: "Dude, that new technoeurosailorscenecore band from Woodbridge
is the shit! They're such excellent musicians!"
Guy 2: "Yeah o.k. LOL dkm"