Not quite a derpy pony

There's a new mare at the barn on a trial basis.  She's  small-to-mid-sized, about 16 years old, and may be a quarterhorse.  Her name is Sadie.

When she was a foal, Sadie got kicked in the face.  She healed up just fine and isn't disfigured or anything.  Without someone telling you, you'd never know she'd been injured.  I haven't tacked her up, but was told she's got no issues taking a bit or any kind of discomfort, nerve, or dental problems.  She does have one little quirk, however.

Sadie's tongue pokes out the right side of her mouth most all the time.  It's just the tip, it's not like she's got it hanging out like a dog.  Some horses do that now and then for various reasons, but with Sadie, it's all the time.  You can push it back in with a finger, but she'll poke it right back out.  Someone commented that it gives her a 'duh' kind of expression.  I kinda see it like cartoons and comics where someone is concentrating really hard.

It's not really that noticeable.  Actually, it's kind of cute.