"Oh, Clara," Sigma is obviously flattered, and his entire demeanor shifts towards something cheerful. "You don't have to do that." He doesn't bother putting up much of a fight.

"I do, thank you. Black." Coffee had been his lifeblood during the decades he'd spent studying, pulling long hours reading and writing papers. After the birth of his son, when he'd try and sneak in sleep between bottle feedings, he'd had to cut caffeine completely - many nights of agonizing withdrawl headaches followed. After that he'd been less inclined to drink his weight in coffee, but he still indulged from time to time.

A thought occurs to him, and Sigma leaves behind his plate to follow Clara to the coffeemaker. "Actually, do we have any sugar? It's been awhile since I've-" For the first time, Sigma turns to look Clara in the eye, or at least speak directly to her face. It's then he realizes something is wrong, and he is shocked to have not noticed before - her eyesocket had been filled with a cybernetic replacement. Rudely, Sigma spends several seconds frozen in horror. Then his eyes lower to the floor, embarrassed. "...Oh. Pardon me. I just noticed-... I am so out of touch with-..."