Little Johnny and Susie,

each five years old, were playing house. They both decided it was time to get married.

So Little Johnny went to Susie's dad to ask for her hand in marriage.
"Where will you live?" asked Susie's dad, thinking this was cute.
"Well," said Little Johnny, "I figured I could just move into Susie's room. It's plenty big for both of us."

"And how will you live?"
"I get $5 a week allowance and Susie gets $5 a week allowance.
That should be enough."

Getting exasperated since Little Johnny seems to know all the answers, Susie's dad asked, "And what if little ones come along?"

"Well," said Little Johnny, "we've been lucky so far!"