Alexa, play "Gigantic" by Pixies

This should be your brother’s FML, not yours. I don’t feel sorry for you - you reap what you sow. But I do feel for him with that diagnosis.

Not "sew," but "sow."

People with gigantism often die young, so you won't have to endure the beatings for very long.

In the meantime, learn to use a sling.

You mean a sling of (the Biblical King) David's ilk, not for a busted arm?

Yes, you got it! When a giant wants to kick your ass, you can look back to history to come up with a solution.

Karma is a bitch. Don't pick on people because you do reap what you sow and if weren't delivering Karma, you would get it elsewhere.

Considering that people with gigantism tend to suffer from a lot of other problems because it is an issue with the pituitary gland, and the fact that they often die young due to other complications, it seems weird that you would turn around his diagnosis to be all about you. Plus, Size isn't the deciding factor in a fight. Take a couple self defense classes, or join a martial art, and his being 8 feet or taller won't matter in the slightest.

be ready to get walked on like an ant