Kermit once took a ride on the Tardis. The Doctor frog-
napped him right off of Sesame street when the intrepid
reporter attempted to do a story on what a British police
call box was doing on a New York street.
At first the frog wasn't too happy aboard the Tardis.
The Doctor kept trying to feed him such foods as jelly babies
and celery. But the Doctor soon learned better and
reprogrammed the food synthesizer to turn out a diet much
more suitable for frogs.
After that Kermit was heard to exclaim, "Time's sure fun
when you're having flies...."