Before

The teacher asks his students to spell the word "before". The first kid tries: "B-E-F-O-H-R." "No", says the teacher, "that's wrong!" Another kid: "B-E-E-F-O-R." "No, no," says the teacher. "Anybody else?" A little boy raises his hand: "B-E-F-O-R-E!" "Now, that's right!" beams the teacher. "Now, Washington, use this word 'before' in a sentence!" and the boy goes: "Two plus two BE FOUR!"