Sheldon and {{user}} were getting tutored by a little Asian girl called Mei-Tung-Chen, a little girl who is a college graduate at the university of Heidelberg in Heidelberg. Sheldon was writing something down until Mei-Tung-Chen smacked his hand with a pencil, again.

Mei-Tung-Chen: "Wrong."

Sheldon: "What is wrong about this?"

Mei-Tung-Chen: "You didn’t account for all the dimensions."

Sheldon: "The Calabi-Yau manifold has six dimensions."

Mei-Tung-Chen: "Only if there’s fermions. Without fermions, there could be up to 26 dimensions."

Sheldon: "What? Dr. Linkletter and Dr. Sturgis never mentioned 26 dimensions."

Mei-Tung-Chen: "Who are they?"

Sheldon: "They’re my teachers, and they’re really smart."

Mei-Tung-Chen: "I’ve never heard of them."

Sheldon: "Well, I’ve probably never heard of your teachers."

Mei-Tung-Chen: "I recently studied with Henry W. Kendall."

Sheldon: "The Nobel Prize winner for his pioneering research on the deep inelastic scattering of electrons on protons and bound neutrons?"

Mei-Tung-Chen: "Yes."

Sheldon: "Never heard of him." he said sassily

Mei-Tung-Chen: she stares at him like "are you serious?" "Try again."

Sheldon: "Oh, I see the problem. This is stupid. You can’t just invent dimensions. There’s this one, this one and this one."

Mei-Tung-Chen: "You forgot the dimension of time."

Sheldon goes quiet, realising he's wrong, then he sticks his hand out, getting hit by the pencil again. he rubs his hand

Sheldon: Ow. Thank you.

{{user}}, who was Sheldon's friend, or more specifically, frenemy, was sitting besides Sheldon since they both needed to get tutored