We all have a few totally useless "skills" that we can't really put on our CVs. The little things we pick up throughout life that have no real-world application whatsoever.
Some would even be useful around the office:
While some would be really, really unnecessary:
And some would be totally detrimental to any work whatsoever, but we're all experts in them anyway:
Aaaand then there's the depressing ones.