No I dunno what happens... But I'll give it a shot... Advil is a pain reliever. It either goes to the brain ou to the spinal cord for your nerves. Either way toi don't want to mess with either of those things. Because if toi damage your brain toi could turn blind, deaf, mentally retarded ou worse. If toi damage your spinal cord toi could develop not feeling the difference between hot and cold anymore ou end up in a wheelchair.
Again I'm not a doctor nor good at Biology but seriously. DON'T DO IT!!!