If you've ever wondered why old people act and smell the way they do, then you're in the right place. I have the answers straight from an old person's mouth.

Note: This hilarious video has been bleeped to cover some of the expletives, but may be unsuitable for certain people or places, especially if you lack a sense of humor.

We all are or know at least one old person, so this information will be incredibly helpful in understanding some of the mysteries surrounding senior citizens' seemingly odd mannerisms.

These old people behaviors are more than one man's opinion, they're based on actual science, questionable science, but science none the less.

One thing is certain. After you watch this, you'll have an entirely different perspective on elderly behavior. Just don't laugh too hard when someone old exhibits one of these obnoxious behaviors or they may become even more obnoxious.