A short way to say "I don't even know" while simultaneously shaking your head, laughing at how terribly retarded people can be.
Often used with responses to "...'The Fuck"
Bill: Mary told me she had sex with her brother.
Joe: ...............'The fuck.
Bill: I don't even.
A phrase originating on the internet used to express complete and utter shock or not knowing what to say
Person 1 : OH MY GOD A CAT IS PULLING A WATERMELON OUT OF A SPACESHIP
You: OMG WHUT I DON'T EVEN
A phrase that really originated from Mean Girls said by Regina George. This was adapted by the internet, probably 4chan, and has been used when one is speechless and shocked.
BRITAIN'S GOALIE JUST LET THE BALL PASS THE GOAL?! I DON'T EVEN-
When something is so surprisingly stupid, you can't even fathom a way to react.
...What the fuck... I don't even...