Flossing Etiquette

There's a guy in my office who sits about 8-9 feet away from me who flosses his teeth every day in the office.
No. Not in front of the restroom sink in the office.
But at his desk.

Yes. Sitting, or at times actually standing, flossing his teeth.

Even sometimes, walking around. Flossing, while stopping once in a while to chat with people, with his floss rolled around his index finger, touching things, other people's report, blackberry, and stuff. Then without washing his hands, go straight back to his desk, put the floss aside on his desk (for later use), and start typing.

Can you imagine the amount of germs invested on his keyboard? Sometimes he makes this tight high-pitch string-picked noises when pulling his gunk out. It's like playing guitar with his teeth. Totally gross. Think of all of the particles being flicked out from this floss of his.

We joked about his habit behind his back, but over the time it has become more gross than funny. Up to a point that I think it is just a matter of us pulling the straws and the one who gets the shortest straw will have to sit with him and tell him how gross it is to floss in public.
It's unsanitary, it's mannerless, it's rude, it's inhumane, it's disgusting and it's... did I say gross already?

So my friends and I got into this discussion about how weird it is that if someone is being rude, the society tends to let that person be. Because, most of the time, if we, for example, stand up and say something to the person that he's being mannerless or rude, that person will get offended.
I mean, how can that person be offended when we are the one who are trying to say in the first place that we are offended by him? The world has gone mad.

Oh, you know what, he also chews his gum and when he needs to talk to someone, he would take out his gum, stick it on top of his notebook for the longest period of time, and for later consumption.

Yup... you can only find this kind of bizarre behavior in my office.