1. Used to describe someone who is inherently adorable, sweet, and cute, but also an airhead. Derived from the actress Reese Witherspoon due to her character in the movie Legally Blonde.
2. Unaware of being pleasantly annoying.
"Yeah, that teenie bopper is so reesy!"
"Ugh, I wish she would stop whining."
"She can't help it. Besides, it's actually kind of reesy."