On the date Raj with Lalita Gupta in "The Grasshopper Experiment", Sheldon arrives and gets excited as Lalita deeply resembles Princess Panchali from an Indian folktale book (The Princess & the Monkey) which his mother used to read for him when he was sick. Raj introduces Lalita to the gang and Sheldon starts reciting the lines from the Princess & the Monkey book, which Lalita finds flattering. Raj gets defensive and orders Sheldon to stay away from his future wife. It's then that Lalita reveals that despite what both their parents wanted, she has no intention of marrying Raj and just came on the date to get them off her case. She then invites Sheldon to dinner, leaving everyone dumbfounded. Sheldon has no idea that he just stole Raj's date.
He tells her, "I can practically smell the lotus blossoms woven into your ebony hair." The book also said that the gods fashioned her eyes out of the stars, and that roses were ashamed to bloom in the presence of her ruby lips. After Lalita snaps at Raj, Sheldon exclaims she had "Exactly the kind of spirit with which Princess Panchali led the monkeys to freedom."
"Forgive me your highness, for I am but a monkey, and it is in my nature to climb. I did not mean to gaze upon you as you comb your hair."