Too much hate here. Many of these are great. People need to get a sense of humor.

as a salmon fisherman, I can tell that #20 is an essential tool to remove the bones of the filets. I am pretty sure it works with other fish as well, but I only use it for salmon

#12... In the early 60's in UK It was normal to have measles parties where the mother of a kid with a dose would invite all the other kids in the area to hang together and get infected in order to it all over with.
Same for chicken pox....

#20 I don't see a problem with this, just because a few immature morons will misconstrue it.