Sex Survey

A sex researcher called one of his participants in a recent survey to check on a discrepancy.

"Sir, in response to the question of frequency of intercourse" the researcher said, "you answered 'twice weekly.' Your wife, on the other hand, said 'several times per night.' How could this be correct?"

"That's right," the man said, "and that's the way its going to stay until the house is paid off!"