Way of thinking (Little Johnny)

Little Johnny was at his class (Fourth Grade) during calculus.

His teacher asks the class a question:
-If there are 3 birds sitting on a tree and a bad hunter shoots one, how many birds will be left on the tree?
Little Helen raises her hand immediately full of excitement and answers that there will be 2 birds left so her teacher says: -that is correct. Little Johnny, though, raises his hand right away full of anger and says to the teacher:-I think that none of the birds will be left since the gunshot will scare the other 2 away. His teacher then answers to him:
-Johnny this is just calculus but I like the way you're thinking.
So, Johnny then sits, sceptic and clearly offended until he raises his hand again:
-Mrs. White can I ask you a question?
-Sure Johnny, says the teacher.
-There are 3 ladies sitting in a park, each one is eating an ice-cream. First one is sucking it, second one is biting it and third one is putting it deep inside her mouth, which one is married ?
After putting some deep thought on it the teacher answers:
-I suppose the one putting it deep in her mouth.
And Little Johnny responds:
-You're wrong, it's the lady who is wearing a wedding ring but I like the way you're thinking.