Little Johnny is the brightest kid in his class, and finishes way ahead of all the other kids during a math's test.
"None." says Johnny.
"What do you mean, none?" says the teacher.
"Well, one falls dead, and the others fly away because of the noise." explains Johnny.
"Ahhh, well done Johnny. I would have said four, but I like the way you're thinking." answers the teacher. Twenty minutes later, Johnny raises his hand.
"Now, can I ask you a question?"
"Miss, three girls are standing next to an ice-cream van, and they've all got ice-cream. One is licking it, the one is biting is, and one is sucking it. Which one is married?!"
The teacher looks a bit embarrassed and says: "Err, hum, I don't know Johnny. The one who, er...is sucking it?"
"No, Miss!" says Johnny "The one with a ring on her finger, but I like the way you're thinking!"