If you're a vet and you're reading this, please explain why it is that dogs freak out when eating lemons. Is it something to do with their taste buds not being able to comprehend the zingy flavour or something? We'd really like to know. Y'know, for science.
Anyways, this little terrier got a mouthful of lemon and sand and decided to whip his hair back and forth, whip his hair back and forth, whip his hair back and forth. Sorry. Force of habit.
It's stuck in your head now, isn't it?