A monkey. (p.s. I have a wonderful, terrible love for bad jokes)
One starts with B and the otber starts with D
Their jobs get a lot easier when there are no reactions
As many as it takes submitters to write an original joke. (by accident)
A monk-ey
A. "One can read, one can write and one to keep an eye on the two intellectuals."
lighting a candle* Doctor: When we find you a new liver.
Triforce
With a monk key.