Did Penny just help Sheldon solve string theory?
Everything is coming up roses for our favorite group of friends.
And then there was Sheldon.

Credit: Michael Yarish/CBS
Sheldon agrees and immediately kicks his fiancee out of the apartment so he can refocus in peace.
Amy is forced to take her Neti pot and clean her sinuses in Penny and Leonards kitchen sink.
Nothing says fun Friday night like stumping your friend with fancy spelling words like expeditiously.
Leonard and Amy are eager to recreate old science fair projects and calculate wave speed formulas.
Much like Penny, I almost fell asleep typing that sentence.
Penny makes herself useful by offering to pick up dinner.
(Read: She was bored and needed to get out of the house.)
Penny can tell that Sheldon is flailing.
Sheldon explains that dark matter is cool and he wanted to give it a whirl.
Penny astutely points out that dark matter is his rebound.
Its the science Sheldon uses to make himself feel pretty again.
Sheldon reminisces about his days with string theory and elegantly teaches Penny the basics.
Sheldon is quick to educate his prodigy that you cant have knots in four dimensions.
But then a light bulb flashes and he amends that statement.
you might have knots if you consider the dimensions sheets.
Its a bunch of science talk.
In other news, Footprints on the Moon is back and playing bar mitzvahs.
But this time theyve added another musician to the band.
When Raj hears Berts original song about a boulder, he mentally checks out.
I love these guys.
Im metaphorically holding up a lighter right now.
I got an A.
She got pregnant.AMY: Girls like you are why I had to come straight home after school.
PENNY: I didnt think anything could top last nights spelling bee, but here comes math!