时长:00:21:36 / 首播:2015-02-05
Leonard has a revelation about Superfluid helium and presents his theory to Sheldon who approves. Sheldon writes a paper on their work and they post an online paper together. It is well received except for one troll who makes disparaging comments. Sheldon challenges this person, but panics when he tries to Video call him. Leonard and Sheldon decide to stand up for themselves and are stunned when their harasser is revealed as Professor Stephen Hawking who commented negatively out of boredom and actually liked their paper.

Meanwhile at Penny's apartment the girls spend the night embarrassing each other. They first watch the terrible gorilla movie that was Penny's last acting job. Then Penny finds some video footage of a younger Bernadette in a beauty pageant. And finally Bernadette reveals Amy's romantic Fanfiction of Little House on the Prairie theme about her and Sheldon. The women become invested in the story. Leonard also enjoys Penny reading the fan fiction to him, but stops before a sex scene.

Guest stars: Jim Meskimen doing two different voice characters, Stephen Hawking as himself

Title reference: A troll leaving nasty comments on Sheldon's and Leonard's online research paper.