A loose, kind of non-schalant hug. It is classified as a hug where only your chest touches and the bottom half of your body is as far away from the other person as possible. The arm wrap around is also typically loose.
You can tell Cindy is not feelin' ya, she gave you a cheerleader hug.
One of those weird, informal, nonchalant and utterly awkward hugs where the girl sticks her ass out and you only really touch chests. Typically means that the person you are hugging is repulsed by you, or doesn't dig you.
I don't think Michelle likes you man, she just gave you a textbook cheerleader hug.