I was asking my friend at what point did Celsius and Fahrenheit become the same.
One of my other buddies quickly chimed in, "-40 degrees..."
Impressed I said, "I didn't know you were so knowledgeable in weather science?"
"I'm not," he said. "But I have been to Minnesota."
Why do we have noses that run and feet that smell?
What do cows put in their coffee?
Calf-n-calf!
How do you know when you've really reached a mathematician's voice mail?
"The subscript you have dialed is syntaxed error at the moment, please rotate your calculator to 90 degrees and redial again."