"Don't want anymore children!" joke

A youngish man goes to the doctor and tells him his situation.
"
I have ten kids and I don't want any more, can you give me some recommended tretments?"
"
Sure."
replied the doctor and continues. "
Well, you could have a vesectomy..."
and trails off.
The patient turns pale.
"
Or you could just light a cherry cracker and hold it next to your ear."
then he continues. "
Then count to ten and there you have it, no more children!"
exclaimed the doctor.
"
I think I'll go for the cherry cracker option, cheers doc!"
the man explains and goes home.
He lights the cherry cracker and holds it next to his ear. He then starts to count to ten on his fingers, he gets to five. "
One minute."
he sticks the cherry cracker between his legs to continue counting... 6... 7... 8... 9... 10!
Bang!