Shade Tree Mechanic
DIyer mechanic using improvised methods - workplace humor
Casual mechanics who fix or modify cars using tools and techniques that are frequently improper or not "by the book". Tool boxes include zip ties, they use chrome sockets on an impact driver, don't own a torque wrench, and probably learned how to fix cars from a buddy, youtube, forum posts, or by doing.
How many foot lbs of torque? Just twist it until its "goodandtight". We're shade tree mechanics, not Ford technicians