Fantasy jokes.

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So the dwarf says to the elf, "Is that an arrow in your pocket or are ye just pleased to see me?"

 

[The Blue Mongoose]

Any medical professional in your book could say:
"Don't worry, this will only hurt a bit." During the proceedure he will injure himself in some way. Then he can comfort the screaming tortured patient by saying, "see, told you, only just nicked myself!"