Smartass Young Library Patron + Facebook = My Pain.

Okay, so some time back, I posted this old picture on Facebook (I'm the homely one with the darker hair. My sister is the one who looks happily sinister):

 
Tonight, I got a message that there was a new comment on it. When I saw WHO the comment was from, I knew there'd be trouble, but I had no idea that it would be QUITE so cutting:

"You even looked like a librarian when you were a kid."

AUUUUUUUUUUUUUUUUUUUGGGH.