All 4 at once? That would suck, only because of the length of time in the chair, if you're even awake.
Had all four removed, but at three different times. No pain, just pressure and weird sounds. Very little pain afterward. Liquid antiseptic diet (vodka, whiskey, scotch) helped with the curing process. Always had it done on Friday afternoons. :beer:
After everything else that I've done stupid or accidentally to rip/tear/break some part of my body, I always look at having my teeth out as the easiest cure as to what ailed me.
Except shingles, shingles are way worse than the cure.