you have to confirm your bank account. it wont take any money out of your bank if you already have enough in your paypal account.
it just has to have that information in order to back up the funds if you overdraw or need to transfer money to your paypal account, etc.
so like if you have paypal you need to confrim a bank account in oreder to use it? cause im only 14 so im not sure if i really supposed to have paypal so when i go to confirm my bank account and they no im not 18 im fucked right?