A drtfy is a useless or idotic person. They are fat and lazy, never getting anything done. Drtfies usually require physical trauma in order to be persuaded.
Look Snowflake, don't blame me bitch, I DRTFA. But I still know the President is a douchebag.
or
DRTFA -- But look the title is: 'The "Ass-Slapping was Never Done in an Inappropriate Manner.'
7:21:46 AM Jackie Bywater: wow.
7:21:49 AM Jackie Bywater: AHAHHAHAHAHA.
7:22:13 AM Jackie Bywater: rofl
7:22:20 AM Eric Lamanna: drtf.
7:22:26 AM Jackie Bywater: lol k