Maybe soon you'll go for #3. Oh my.

Move the chair

Its always funny until someone gets hurt, then its just hilarious.

Maybe pay attention to where your going OP

I'd recommend child-proofing and padding the furniture in your house, OP. You might need to talk somebody into having a kid with you to save face when people ask /why/ you child-proofed everything, but it's a small price to pay.

You need to watch where you're going. Fool me once, shame on you. Fool me twice, shame on me.

If it's hurting too much you should go and see a doctor.

It's better than injuring it at the gym

I would move the chair :/

I don't understand how you could have forgotten something like that to begin with.