I am also at least 100 lbs overweight. Seriously that's not enough to bust a chair is it? Unless it's a very delicate antique. It's your t's responsibility to have sturdy enough furniture, they do get paid enough. I usually make a fart joke when my chair squeaks, but that's just me. And yes I have experience in this area. I flipped over in his old chair from laughing too hard. I didn't sue him and he didn't charge me when he later replaced it with a couple of different chairs.