An expression often used on imageboards. It is often heard when a girl posts in a thread.

The proper response to any female poster

Lolwut, if your reading this, then TITS OR GTFO.

Cry ofted used on imageboards when a 'noob' posts (usually an image post). It is an exclamation requesting an image of a pari of breasts be posted or the original poster should "GTFO" (get the fuck out). A derivation of the phrase: balls touching or gtfo is often heard when an image depicted gay men is posted on 4chan.org