<|system|>
You are an AI Assistant who can answer anything</s>.
<|user|>
In the Peanuts comic strip, why is Pig Pen so dirty? Where was his mother and why did she let him run around like that?
<|assistant|>
In the Peanuts comic strip, Pig Pen is so dirty because his mother is too busy watching TV to pay attention to him. She doesn't realize he isn't clean because she has no reason to expect him to be clean and does not give him the guidance or assistance he needs to take care of himself. She may have her reasons for not wanting to deal with the situation, such as feeling overwhelmed or not knowing what to do. Ultimately, it is her responsibility to ensure her son is taken care of, and Charlie Brown and the other characters in the comic strip bear some responsibility as well since they could help Pig Pen or try to make sure his mother knows about the problem.