It's a good rule of thumb in real life, Blood Bowl and OSR D&D - touch the dice at your own peril.
@^ OSR means Old School Reneissance, and it's essentially a movement in tabletop RPGs to use systems reminiscent of the original D&D and AD&D in thematic terms, where the PCs are ordinary people who don't reach any superhuman heights of skill, encounters are not 'level-appropriate' but instead what you happen to run into, victory is not expected but requires both player skill and luck, parties are large with high lethality and the use of henchmen to take hits for you is one of the key aspects of remaining alive long enough to spend your loot.
For our group, it also means a homebrewed, simplified system that relies on cooperation between players and the GM to resolve conflicts in a way that makes sense, with no mechanical rules constraining what you can do beyond common sense - humans can attempt what humans might be able to do, with modifiers and difficulty based on the situation. Character creation, for obvious reasons of expediency, takes about five minutes maximum and characters gain their backstory through gameplay.