When the auto-correct feature on your iPod Touch or iPhone tries to correct your spelling, but instead changes it to words that just dont make sense with what you're typing.

Music so good it could elicit sexual arousal.

The actual definition of autocorrect ...because it is very rarely correct.

The worst thing in the history of man. When your iPad, iPhone, or other devices with autocorrect built in changes a word to something that doesn't make sense.

When the auto-correct feature on thy mobile telephone fails to complete its task and manifests random-ass words of which make no sense at all

When the "Autocorrect" feature chooses incorrectly and changes your typing to a word you did not intend.
Autoincorrect (noun): The typing feature that invariably changes your intended word to something incorrect.
Autoincorrect, -ed, -ing (verb): The action of the "autocorrect" feature changing your typing to an incorrect word.

When your typing something correctly and you're phone changes it to make it wrong.