Being an adult... Originally uploaded by
kidmissile.
...means you have to find a reliable furnace repair company to diagnose the loud vibrations in your furnace. And then pay them to replace an item like this
draft inducer assembly, because repairs of this nature are usually best left to the pros. I'm a DIY kind of guy, but this is just a little beyond my skillset.
These things get a buildup of deposits or rust over time. The rust in particular will permanently imbalance the rotating wheel, which then causes vibrations during operation. The vibrations eventually cause the rubber mounting gaskets to fail, resulting in even louder vibrations.
Being an adult also means you can have cookies and milk for dinner! =d