When you are casually texting someone and, either by your own mistake or by autocorrect, you turn the conversation sexy by an accidental typo. Tends to happen most often when you're talking to a crush/object of desire.
Her: What are you up to tonight?
Me: nothin, wanna bang?
Her: ...
Me: oh shit lmao wanna hang*
Her: Classic Freudian typo
When someone is writing a message, comment or post and makes a typo via autocorrect that consists of a word that that reveals more information about themselves than intended.
Seth:"4 cylinders make more power than a heavy V8, you ever heard of turbo? I'll gape any dude in my Civic to prove it"
Jeff: "You'll do what Seth!?"
Jessica: "Haha! looks like he made a Freudian Typo."