Some rpg systems have skills list for player characters. Examples of these are 3.x and 5th edition Dungeons and Dragons, GURPS, Champions, Basic Role-Playing, and quite a few more. Whereas there are some older games as well as some modern OSR-based games that do not have skills inherently built into the system. Non-skill based systems abstract it out through the use of ability checks or even using character backgrounds – something Dungeon Crawl Classics does. We talk our preference.
Humor in roleplaying games, there’s a time and place for it. It can bring levity, but how much is too much and what happens when it gets out of control? Is it really worth killing a player…character over it? It can depend on the game you’re playing. Some games like Paranoia can certainly bring humor as a center point within the game. Genre also sets the mood. In the end, you want to have fun and not everything needs to be done with massive amount of seriousness.