Critics noted that Stuart’s willingness to perform menial tasks for money—ranging from shopping with Amy to yelling at Sheldon on Amy’s behalf—provided some of the episode's strongest laughs.
He pays Stuart to take his place shopping with Amy, and later to hold his place in the theater line while he goes to apologize to her in person. [S9E23] The Line Substitution Solution
Summary. Sheldon hires Stuart to spend the day with Amy when he'd rather go to a movie screening. Also, Leonard's mother, Beverly, The Big Bang Theory Wiki | Fandom "The Big Bang Theory" The Line Substitution Solution - IMDb Critics noted that Stuart’s willingness to perform menial