Answer: Margo punched him and knocked him over their couch.
Todd and Margo had just had a tree crash through their window as they were eating dinner. Ironically, before the tree crashed through the window, they were talking about possibly getting a tree. Margo had enough of Clark and told Todd to go over there and take care of it. Todd didn't go over there, but Margo did. Just as Margo rang the doorbell, the squirrel and Snots came running out. They both landed on a horrified Margo. When Margo came back to the house, her dress was torn and she was messed up. Todd asked her what happened and she punched him in the face. Margo hit Todd so hard that he fell over the couch.