Mary and Marshall are on the job in this scene. It's courtesy of the episode "The Rolling Stones."
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In Plain Sight Season 4 Episode 9 Quotes

Mom, are we seriously going to have this warm and fuzzy catch up in front of all these other weeble wobbles?

Mary

For the record, just because my boobs are so big that Dolly Parton can sue for silhouette infringement doesn't mean I'm this delicate flower or some porcelain doll.

Mary