How can I cleverly tell this know-it-all how it really is?(he's not a dr.)...Read on...?

Question

My mom had a swollen lymph node by her cheek... he said DONT WORRY he diagnosed it as an abcess.

A little boy had a fever of 103F. He said DON"T WORRY it was teething.. It wasn't...

AND SEVERAL other things!!!

How can I tell this Mr. know-it-all.. that he doesn't know it all.. He's not a dr..

Don't worry about who he is to me or how I know him.. Just tell me something clever to tell him

Answer 1

Ask him where he got his medical training.