Oberyn remembers the first time he saw Tyrion as a child. For anyone who might think Cersei used to be a sweet child, I point you to this scene. (We can talk about the Maggy the frog incident later.)
“Cersei even undid your swaddling clothes to give us a better look,” the Dornish prince continued. “You did have one evil eye, and some black fuzz on your scalp. Perhaps your head was larger than most . . . but there was no tail, no beard, neither teeth nor claws, and nothing between your legs but a tiny pink cock. After all the wonderful whispers, Lord Tywin’s Doom turned out to be just a hideous red infant with stunted legs. Elia even made the noise that young girls make at the sight of infants, I’m sure you’ve heard it. The same noise they make over cute kittens and playful puppies. I believe she wanted to nurse you herself, ugly as you were. When I commented that you seemed a poor sort of monster, your sister said, ‘He killed my mother,’ and twisted your little cock so hard I thought she was like to pull it off. You shrieked, but it was only when your brother Jaime said, ‘Leave him be, you’re hurting him,’ that Cersei let go of you. ‘It doesn’t matter,’ she told us. ‘Everyone says he’s like to die soon. He shouldn’t even have lived this long.'” Tyrion V – pg 526
