Not too many jokes about Quakers but here is one:
An elderly Quakers couple was asleep when a faint noise downstairs awoke the woman.
She, of course, shook her husband awake and whispered that there was an intruder in the house. The old boy grabbed his hunting rifle and headed for the stairs.
There on the stairs the Quaker came face-to-face with the burglar.
The old man took careful aim and said, “Friend, I mean thee no harm, but thou art standing where I am about to shoot.”