Which timeline are we in here? It's unclear. But it's a photo of Abed and Britta from "Remedial Chaos Theory."
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Troy looks especially dapper in this photo, doesn't he? It's not the character's typical apparel.
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Community Season 3 Episode 4 Quotes

Just so you know Jeff, you're not creating six different timelines.

Abed

Man, pizza guys are getting worse and worse looking. I guess all the good ones went into porn.

Pierce