Berta goes on vacation, forcing Charlie to get a replacement on Two and a Half Men.
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When Berta goes out of town, Charlie gets a replacement for her in "A Good Time in Central Africa."
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Judd Nelson returns to Two and a Half Men as Lyndsey's ex in the upcoming episode, "A Good Time in Central Africa."
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Two and a Half Men Season 8 Episode 9 Quotes

Charlie: Did you tell her to roll me over on my stomach in case I vomit?
Berta: It was number one on my list.

I saw your commercial for the shake weight. My brother does basically the same thing in the shower every night. He has absolutely no muscle definition in his arms.

Charlie