Quote from Tim in Reach Out and Teach Someone
Tim: OK, first thing we want to do is remove the trap. Jill: The curved thingy? Tim: Well, that would be the technical term. To remove the trap, we have to have the proper tool. For that, we use the trusty monkey wrench. You'll notice one side is fixed, it's serrated on both sides... Jill: Why do they call it a monkey wrench? Tim: They call it a monkey wrench because even a monkey can use it. Jill: Thank you, Cheetah.