Re: Static..
I don't drag my feet when I walk, the floor is a tile floor.
Dragging the feet is only one way of generating the electricity...
It could be something like your socks (wool, maybe?) and pants rubbing. Or your jacket and shirt, or sweater.
There is something called the "Triboelectric Series" that lists common materials, the type of charges they produce, and how well.
Human Skin is pretty far up the list for producing '+' charges, followed by leather, rabbit fur, glass, human hair, nylon, wool, cat fur, silk, paper.
Cotton is listed as neutral, which means it is good for non-static cloths.
On the other side of the equasion, the list for producing '-' charge goes as follows:
Teflon (#1), silicon, various plastics (pvc, polyester, etc), gold, brass, hard rubber, wood (little).
Soooo... give up your fur lined underwear, with your nylon and wool clothing for the winter. Go with cotton. Stop using teflon to lubricate your brass doorknobs, and silcon polish on your tile floor.
And, it's entirely possible that your tile floor is charging up, static is a bit different than non-static electricity. It likes polished surfaces to build up on... Specially if you have nylon soles on your slippers.