I may be interpreting it wrong, but I don't think the requirement was "don't be humorous", I think it was don't do it just to be humorous. In other words, if th

I may be interpreting it wrong, but I don't think the requirement was "don't be humorous", I think it was don't do it just to be humorous. In other words, if the idea is humorous to some, that is fine, but you shouldn't try to create an idea just to fit a joke. Not sure if I've explained that clearly, but hopefully I've got my point across :-)