Raj: Well, to paraphrase Shakespeare: It's better to have loved and lost than to stay home every night and download increasingly shameful pornography. Penny: Oh... you poor baby. Raj: What's wrong with me, Penny? Penny: Nothing, nothing. You know, if we weren't friends - and you hadn't brought up that creepy pornography story - I'd be on you like the speed of light squared on matter to make energy. Raj: Hey, you totally got that right. E = MC squared. Penny: I listen. I have no idea what it means, but I listen.
Sheldon: I recently read that during World War Two, Joseph Stalin had a research program to create supersoldiers by having women impregnated by gorillas. Howard: What a sick use of science. Raj: Hey, as long as the baby's healthy. Amy: I wonder if Stalin considered any other animals. Leonard: Hippos are the deadliest creature. A half-human, half-hippo soldier would be pretty badass. Howard: Yes, but when they're hungry-hungry, you can stop them with marbles. Sheldon: Yeah, the correct animal for interspecies supersolider is koala. You would wind up with an army so cute it couldn't be attacked.