A Rov is asked to say a few words at a Bar Mitzva of one of his Shull goers. They asks for five minutes max.
The Rov says he can't talk because he forgot to bring his teeth. So someone runs to the Rov's house, pics up the teeth, and comes back. The Rov then get's up and starts speaking, first 5 minutes, then 10, 20, 30... he finally steps down after an hour. When the Bar mitzva was over the father of the boy asks the Rov why did you speak so long, we gave you five minutes max? The Rov scratches his head and says Oy, the guy brought me my wife's teeth.