Tablecloth Ghost is a dangerous critter that masks itself as a simple tablecloth. It could try to eat a man, if allowed to get close enough.
For the most part, these guys are more mischievous than harmful. If you get caught, it'll wrap itself around you and sit on you. When you're trapped you cannot walk, fire your weapon, or throw bombs, all you can do is hop in place and look ridiculous. If you're caught in the direct vicinity of another more dangerous obstacle - a falling chandelier, a set of animated dishes, etc - you won't be able to evade them or fight them off and will take damage until the Tablecloth Ghost decides it's done with you. If you wait long enough or jump enough times, the ghost will soon decide you're not worth the hassle and fly off.
To prevent capture by Tablecloth Ghosts, approach clad tables cautiously. If the covering moves, aim your weapon up and over to shoot at the underside, and let'im have it - if you vanquish the ghost before it can smother you, you're safe.