These are one of the funniest kind of jokes because the Medical profession is otherwise a serious profession.
An elderly woman went to her doctor, complaining about not being able to hear out of one ear.

The doctor then took his penlight, looked in her ear, then took his tweezers, reached in, and pulled something out.

After examining the object for a second, he exclaimed, " seems you inserted a suppository into your ear...".

The old lady thought for a second, then responded "Gee....I guess that explains why I can't find my hearing-aid...!".