Mandark laughed. Dexter sat at his desk, preoccupied with a cup of coffee and book about advanced thermal physics, in "casual" clothes Dee Dee had picked out for him. These "casual" clothes consisted of a pine green sweater over a white dress shirt and a pair of black slacks with a pair of dress shoes. His hair was straightened and his glasses were a square shape, but still as concentrated for his poor vision. He tapped the pencil he was holding impatiently while Mandark started to ridicule him. "What kind of man are you, Dexter? Is it possible that I, Mandark, have a better fashion sense than you? You let your sister dress you!" He cackled again.
Dexter ignored him and corrected a phrase in the book quickly, moving onto the next paragraph.
"Maybe you aren't as strong-willed as I thought you were, seeing as how you backed down so easily to your own sister! And here, I thought you were the unmovable wall of stubborn-ness!" Mandark continued, prodding Dexter with a bony finger. Dexter rolled his eyes.
"Maaaandaaaaark!" a high-pitched voice shrieked. "Come make me a saaaaaandwich!"
"Uh-oh."
Olga burst into Dexter's office and snatched Mandark's hand -"Eek!"- And started to drag him out. When he was out of Dexter's lab and being pulled towards the cafeteria, Dexter chuckled.
"Who backs down now, Mandark?"