@edavies @kamstrup this is indeed correct and would not work without a corresponding alias.

As far I can see, there are several rumors for the missing n, like the one you mentioned. However, I did not find any evidence for the correct story behind.

@stiiin @kamstrup luckily, everybody is free to have an own sense of humor

@kamstrup
Actually, you can also use them to tell a short story like:
unzip | strip | touch | finger | grep | mount | fsck | unmount | sleep