Anonymous

Have your friend hold an apple above your head, or some other part of yirr body and then let go. If there is no gravity, the apple won't hit you.

Anonymous

Oh, do you think you are one of the characters from the Douglas Adams "Hitch-hikers" series? They did it by throwing themselves at the ground - and missing. If you can do that, you've gone a long way towards your proof.

Anonymous

You can't, because it does exist. What do you think is holding you down??

Anonymous

Tell them "it's just a theory"

Anonymous

Very simple - jump off a table and prove you don't fall to the ground.

Anonymous

By the counter argument, that if it did not exist, then you would float off into space. !!!!!

Anonymous

throw yourself off a skyscraper and don't fall.

Anonymous

It's obvious gravity is just a theory, we all know earth sucks.

Anonymous

it is impossible to disprove reality--unless one is Donald Drumpf

Anonymous

Jump off a twenty storey building. If you do not make a mess on the pavement below you will have proved your point. If you do make such a mess your friend will not have to be annoyed by your puerile point again.

Anonymous

It's generally accepted that gravity does exist, so I don't think you can.