The art of speaking each word backwards while keeping the standard continuity of a sentence. Variations range from changing the sound of the letters or keeping their original sound.
Boy: I Evol Uoy. (Eye eevol ooh-oy)
Girl: What?
Boy: I love you! I said it backwards; it's called 'Backspeak'.
Girl: What?
Boy: I love you! I said it backwards; it's called 'Backspeak'.
by The Fartman November 17, 2010