Plot Synopsis: Sheldon and Amy honeymoon in New York, with Amy getting annoyed at Sheldon's regimental scheduling of their coitus. Meanwhile, Penny and Leonard discover they are uncomfortably similar to Amy's parents, Mr. and Mrs. Fowler, and Raj insults physicist Neil deGrasse Tyson whilst appearing on the local news and starts a Twitter war.
- Adam Westing: Neil deGrasse Tyson plays himself as vindictive and intimidating, who menaces other scientists For the Evulz. The Stinger shows him going after Bill Nye the Science Guy.
- Celebrity Paradox: Leonard mentions watching Mamma Mia! Here We Go Again, which features Christine Baranski, who happens to play his mother.
- Not So Different: Leonard is afraid that he and Penny will end up just like the Fowlers. Penny doesn't like the implication that she will be a domineering battle-axe like Mrs. Fowler.
- Schedule Fanatic: Amy gets upset at Sheldon for his need to schedule every little thing, specifically having sex, which she feels needs to happen spontaneously.