A law that is so stupid and profoundly inadequate but remains in existence because it gives lawmakers an erection when considering its monetary benefits. Erection law. Look for it in your textbooks.
Oh, you're a sociopath and want to act as your own defense in court? Sure! Erection Law!
Or basically all laws that involve a plea bargain that gives you an inadequate sentence to an intolerable offense. See: manslaughter.
The husband of one's grandparent-in-law's sister.
My co-granduncle-in-law is a good person.
Spouse's grandpibling's husband.
co-granduncle-in-law.
"No matter how storage-containers are arranged in a stack, the one you want will always be on the bottom, and so you'll have to move all of the others first."
Regardless of whether you arrange a stack of boxes in alphabetical/numerical order from top to bottom or bottom to top, Murphy's Law of stacked boxes will always "get you" --- i.e., da box you'll need will always be ether da first or last one, depending on which way you stacked them, and so you'll always need to take them all down to get to da one you need.