爱美丽给我说的小笑话

昨晚爱美丽给我猜的谜语
A cowboy rode in on Friday, stayed for 3 days and left on Friday.  How did he do it?
我表示完全没有头绪
爱美丽的答案：because his horse's name is Friday

我在刷牙，牙膏沫喷了一镜子。