Ted probably should've been more attentive to his girlfriend. Instead of pestering her about how long it took her to get ready, she should've listened when she explained that looking good takes time. After one too many times of fighting, she took action with a magic spell. He'd be in her body for at least a week. Even a simple shirt and jeans had taken him a while, and then there were her boots! They were such a pain to put on, and the heels were even worse to walk in!