Actually, I have an adopted aunt who is always doing home cures for things. She takes ACV as a digestive aid when she gets a sour stomach.Acid stomach? Add in more acid!
Then again, she also doesn't think we actually walked on the moon either, so there ya go
Well, actually, you can prove that aspirin is an effective analgesic: http://www.ncbi.nlm.nih.gov/pubmed/22513905 is just one really quick reference. As a non-steroidal anti-inflammatory you can also demonstrate its mechanism of action as an anti-prostaglandin ...