None. They will never find one that burned as brightly as the first one.
or
Do you swear to pull the tooth, the whole tooth and nothing but the tooth?
or
Only one, but they get three tech. reports out of it.
or
Just one, provided there is a programmer around to explain how to do it.
or
1,622. One to tell the original joke, and the rest to submit give some minor variation of it! For example:
or