Because they both "practice" their professions.
I'll tell you tomorrow.
Because they don't know the words.
Because you can't trust something that bleeds for days and doesn't die.
Because he never spills the beans
Briefcase
Professional courtesy.
Because he didn't have any patients.
It was a no brainer.
Because they practice relative dating!
He wax off everyday
Driver
Well, chiropodists like jokes. But opticians like them.