The story behind this song is, during recording George Martin asked the boys if they were singing what he thought they were singing – ‘tit, tit, tit, tit’. The boys assured him they were in fact singing ‘dit, dit, dit, dit’. Martin was reassured and the song went to press. Then it was revealed that they had been singing ‘tit’ all along, thus sneakily sneaking a mildly inappropriate word past BBC censorship. That’s hilarious. Except that if ‘tit’ and ‘dit’ sound identical to the naked ear, it’s not that huge of an achievement in terms of gaining freedom of speech in pop music. But oh, what an innocent time the young sixties must have been when mention of a mere tit was considered racy!