A teacher sees one of her pupils isn't paying attention to her math lesson. After several attempts to get his attention back on the subject she walks to his desk and asks him, "If there are three ducks sitting on a fence, and you shoot one, how many are left?"
Johnny without hesitation, replies, "None."
The teacher, not amused by this, asks, "Why?"
"Because the shot scared them all off."
"No, the answer is two, but I like how you're thinking."
Later that day, Johnny approaches the teacher at the end of class. "If you see three women walking out of an ice cream parlor, one is licking her ice cream, one is sucking her ice cream, and one is biting her ice cream, which one is married?"
The teacher smiles and replies, "The one sucking her ice cream."
Johnny says, "No, the one with the wedding ring, but I like how you're thinking!"