Apostrophe and Simile i think.
Karen was disdaining her thoughts on the political debate.
(Now that I have answered your question can you help me with my current one. Its the most recent one on my profile page thing.)
Answer:
In most contexts, they are interchangeable. The only difference that most native speakers can agree upon is that someone is more formal than somebody (just as anyone is more formal than anybody, and everyone is more formal than everybody).
