TAB stands for temporarily able-bodied. It's a rare human being who isn't physically disabled at some point in their life, so most of us are TAB. I'm not sure why but I'm really sensitive to noticing the privilege lately: I'm seeing it on blogs a lot. And I have just spotted it in a funny op-ed at the New York Times.
Seth Stevenson wrote it to criticize people who travel with roller bags, those suitcases with a pull-out handle and wheels or casters to make tugging them along behind you easier.
People, you never need more clothes than you can comfortably carry in a shoulder bag. Soldiers in ’Nam got by with less gear than the average executive now packs for a two-day trip. Unless you are a deep-sea diver or, maybe, an iron-ore salesman, your luggage really shouldn’t necessitate load-bearing wheels.
Or unless you are someone with a physical disability.
Or a person who needs to appear in clothing that a soldier in the field wouldn't wear. Or someone bringing gifts for loved ones. Or someone who is easily bored and brings lots of books and knitting (like me).
Of course, Mr. Stevenson will no doubt respond that he didn't mean disabled people, and that should be obvious. But it's not obvious, and denying your privilege is one of the perks of having it.