Talk:The Line Substitution Solution/@comment-4793317-20160506005036

Leonard has Penny pick his mother, Beverly (Christine Baranski) from the airport to avoid her and attend a movie opening. Penny tries to bond with her, but is subjected to her analytical and condescending remarks and lost when Amy and Bernadette talk science in front of her. Also, she is tiffed that she didn't get told about their Las Vegas wedding. Penny offers to do it in front of everyone which she finds acceptable.

Sheldon hires Stuart to go shopping with Amy and to apologize to her to Amy's annoyance. Sheldon does rush back to apologize to her while Stuart holds his place in line.