Will Penny finally find a way to bond with Leonard’s mom?

Its always a fun episode when Christine Baranski visits the set ofThe Big Bang Theoryas Leonards passive-aggressive mother.

This time Penny is determined to bond with the esteemed Dr. Hofstadter.

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Credit: Michael Yarish/CBS

But first, she and Sheldon have to use their breakfast time to expand knowledge.

Sheldon holds up a flash card and Penny correctly guesses the sign for Helium.

In turn, Sheldon identifies a photo of Taylor Swift.

Penny notes the symbol for pie.

Sheldon almost stumbles on a Kardashian (tricky!

), but he correctly guesses Khloe.

Weve come such a long way in nine seasons, havent we?

Later that day, Raj informs the guys that Joss Whedon is hosting anAvengersscreening.

Sadly, Sheldon cant attend the screening because he is going shopping with Amy.

He assumes everyone will choose to not have fun without him.

Howard astutely points out that when Sheldons not there, thats when they do have fun.

Raj suggests Sheldon hire someone to help him be in two places at once.

Amy is livid that Sheldon would pay Stuart to get out of spending time with her.

Stuart assures her that Sheldon is sorry but would rather spend time standing in a line.

This is NOT helping, Stuart.

Beverly senses Pennys nervousness and asks what she can do to help assuage her anxiety.

Try not psychoanalyzing everything!

Beverly understands and does her best to be pleasant at dinner with the girls.

This tactic backfires on Penny.

Beverly ends up bonding over scientific mumbo jumbo with both Amy and Bernadette.

They are three peas in a pod, and Penny is the piece of celery nobody wants.

looks like Amy has now paid Stuart to give Sheldon a piece of her mind.

Sheldon sends Stuart back over to Pennys apartment with apology flowers.

Amy pays Bernadette $5 to slam the door in Stuarts face.

Stuart returns to the theater to tell Sheldon that Amy is still mad.

Sheldon decides to take matters into his own hands.

Sheldon arrives at Pennys out of breath.

He admits he was wrong, promises never to do it again, and asks for forgiveness.

Amy obliges, and he runs out.

Amy considers this a small victory.

Does her daughter-in-law want a connection or validation?

Penny offers that she just wants Beverly to not insult her to her face.

Does she even know what constitutes an insult?

She thought it was a mistake, but now she can see that Leonard has never been happier.

Penny offers to have a private ceremony for Beverly now that shes in town.

Beverly finds that perfectly acceptable.

Unlike everyone else in the line, Sheldon cant let it go.

Once again, small victories.

Theoretical Laughter

Sheldon:I remember because if it looks like Kim, its Kim.

If it looks kinda like Kim, its Kourtney.

If it looks nothing like Kim, its Khloe.

Amy:I called Sheldon babe once, and he asked me to get a drug test.