what could putting magnet's in my ears do to my brain?

[Guilmon and a shotgun]

Well an MRI scan uses Magnetism, and the only real harm that can do is rip any conductive metals from your body. Basically magnets won't hurt you, not without something metal and magnetisable placed near or on you in a way it can be used as a projectile.

But apparently if you let someone put sperm in your ear, it's said you can go deaf. This is probably just bollocks, but it's pretty interesting.