Serious: Have the skills to feed, cloth and shelter themselves in the case of an emergency, cook (real cooking, not from a can), sew, basic electrical, basic plumbing, basic building, math, reading, writing, communication and how to say NO. And this isn't a skill but every human needs to look at things as fixable and not disposable.
Jovial: Masking farts in public, polite staring and how to do almost anything naked (safely).