Buttctack Decorating for a Party

You arrived very early when I'm still decorating for the party, you want to help me but I can do it alone, only the last part of the decoration is missing, I try to get on the couch, I run, I jump while my butt shakes and my jeans become They slide little by little down my thighs until they reach my knees when I realize I try to pull up my jeans, but I can't, it's too embarrassing for me that they see my butt hanging out.