(Q) What's the best form of birth control after 50?

(A) Nudity.
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(Q) What's the difference between a girlfriend and a wife?

(A) 45 lbs.
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(Q) What's the difference between a boyfriend and a husband?

(A) 45 minutes.
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(Q) What's the difference between a new husband and a new dog?

(A) After a year, the dog is still excited to see you.