I am something that floats. But after a period of time I fall.
Small and bearded, both in the real world and in stories.
What has to be broken before you can use it?
What superhero is terrible at their job because they always get lost and are late?
You can find me inside your body but not below the waist or in your tummy. I am located in the upper part and I am a symbol of love.
Man's most important invention.