求英语文字游戏

看一下这个笑话行不行 During a busy holiday weekend, a woman who was eight months pregnant went to the railway station to return home to her husband. At the reservation counter, when her turn came, there was only one ticket left. Taking pity on a very old lady behind her in line, she offered her berth（a seat, it's a letter difference from birth） to the old lady and sent a telegram to her husband which arrived with a small error: Shall be coming tomorrow, heavy rush in the train, gave birth to an old lady. 注意看下berth 和birth 非常相似，但berth是座位之意，而give birth to 是生孩子的意思 孕妇很粗心哦来自：口语陪练论坛