Lunch, with a side order of BS

I can't remember the last time that I have been this aggravated from having to hear someone's monologue. I would have enjoyed my lunch much better if the guy at the next table would have stopped talking at such a loud volume. At least if you had something interesting to say or remotely intelligent, then fine, flaunt your stories so that everyone and their mom's can hear you. But if you're going to make stupid remarks and contradictions, then please keep them to yourself. I felt bad for the other guy dining with him because during the entire time, I don't think he ever got one word in. One of the weird things was that certain things that I would bring up, minutes later I would hear him ranting about the same topic. So what did he have to say?

• Apparently he was the food know-it-all. For every dish that he & his companion shared, he would discuss in great detail the history of that dish and how he knew where to get the best tasting ones. Then after I mentioned how I liked certain dishes, he would discuss how that "certain" dish tastes only good to those who have no taste in food.
• I brought up palm readers, then immediately after he finished up discussing the proper way to make shrimp with lobster sauce, he starts yelling about how palm reading is just a mental thing and that there's no basis for character interpretation. He also said that the life line shouldn't tell you how long you live, rather it should be the health line. According to him, if your health line isn't that great, then there's no way you can live long. (Uhm, didn't someone just say palm reading was bs? Plus, you can have not the best health but live an unhealthy, sickly life.) Afterwards, he praises the US for having everyone's fingerprints on a computer system. He found it amazing that just from the fingerprint, your character and whether your nature was a felon or not could be deciphered (he didn't mean if you had previously committed a crime, but rather that they could decide if you were just a bad person in general). Now that he called a science.
• Out of nowhere, he starts lecturing his buddy that children with short fingers, especially the thumb, obviously have Down syndrome or some form of mental retardation. He stressed that all small fingered individuals are mentally retarded in some way. So then he said that if you had small fingers, then you would be horrible with math and could never do well!