Forty

Two deer walk out of a bar. One of them turns to the other and says, “I can’t believe I blew forty bucks in there.”
What's five miles long and has an IQ of forty? A blonde parade.
If a monkey has thirty bananas in one hand and forty bananas in the other hand, what does he have?
Very big hands.
“What turning forty means to me? I need to take my pants off as soon as I get home. I didn’t used to have to do that, but now I do.”
Tina Fey