That's true but there's also different qualities of humor. Some people like unwitty, cliche forms of humor like white girls (the only funny thing about that movie was the guy who kept hitting on one of the whitegirls) or something whereas other people would find that boring and cliche
Usually when people like white girls I think of them as having a bad sense of humor, kind of how you can have bad taste in food or wine or art or something.
You know they say those that have "good taste" in anything will generally have better taste in everything. Not that they are superior or anything, just that they are inherently more suited for sensing details or something.
also don't forget guys thousands of years ago humour=temperment/personality. You know, Sanguine, melancholic, choleric and phlegmatic :O you see it in alot of old literature such as shapespeare and even more modern examples such as sociological stereotyping of body types to detect who is more likely to commit crimes and stuff.
In that sense everyone has Humour!