My old buddy Blair MacLean (alongside his late brother Gary in the infamous comedy duo MacLean and MacLean) used to perform a routine called "Gross," which defined some of the more disgusting adventures one may encounter in their day-to-day ("Kissing your grandmother and she slips you the tongue? That's gross." or "Biting into a hotdog and finding a vein inside? That's gross.").
In a corporate setting however, what sits atop the gross list (particularly in Japan) is taking someone's business card and using it to pick your teeth. Especially just after it's given to you.
Unless, that is, you are a patient of Dr. Elliott Mechanic.
"Doc Rock," as he is known, is not only the leading worldwide authority on cosmetic dentistry, but is a shrewd marketer. His current business card (see below) not only sports his logo and practice coordinates, but is filled with 12 yards (!!!) of very usable dental floss.
An admirable gimmick, impressive engineering, and of course, majestic Pow!
I thank God he's not a Proctologist.