hehe, quite good.
Here´s one to top.
Little Johnny is having a math class. The teacher (a woman at young age) puts up this example: "Three birds are sitting on a branch, and a hunter shoots one bird, - how many are left"
Little Johnny raises his hand and gets to answer, - he answers "none".
She: nope, it's 2 birds.
he: no bird would sit on a branch if you shoot one at it's side, - the other's would fly away.
she: it's not the mathematical answer, but you get a point for this, I like the way you're thinking.
he: okay, can I ask you a question then?
she? sure (with a suspicious eye, for little Johnny is a bit of a naughty boy at times).
he: Okay. Three women are eating icecream. One is licking it, one is biting into it and one is sucking it. One of them is married, - which one?
she: (blushes).....errrr....the one sucking it?
he: no stupid, it's the one with the wedding ring. But I like the way you're thinking
