Title kinda says it all. You have to make a short summary of what you would do if you were shrunk to the size of an ant. My post: I would get into my candy and have 1 jumbo marshmallow last 4 weeks!
If this were possible, and it happened, I'd probably avoid everything and figure out a way to become a normal size again so I don't die of being stepped on.
Hmm... Let's see. I would go rob a bank. And then... I would annoy people. And then.. I WILL RULE THE WORLD AND BECOME KING!
Sneak into the Government buildings around the world and realise all the secrets they hold. Before then coming to realise that humans are the actual "bug" in society.
I'd probably die really quickly. But if I somehow could ever manage, I'd try messaging a friend for help.