Little Johnny's teacher was was discussing the weather in chemistry class? She asked, "When rain falls does it ever rise again?"
After asking various students she called on Little Johnny.
"Yes, it does... in dew time."
"What did you buy your husband for his birthday?"
"Well, knowing he wanted a journal, I bought him one that locked since he's so particular about his notes."
"And surely you bought something for yourself too?"
"Oh, of course! I made myself a duplicate key."