Maybe he'll explain to you one day, Robin (he won't). But it's a good nickname and fits with her actual name being bird themed. At least she's not bird-brained.

"She would, but she'd be nice and humor me. And I wasn't going for her, I wanted her to go to you." Just as much as Billy needed someone; how Eddie and Steve needed each other, the blond knows that Robin probably did, too. It was only fair.

"Well that's what pecs is short for. Pectorals. But if you want me to talk about muscles like that, I can keep doing that for you."

Stop harassing Robin, Billy. She's your friend!

"But I figured you'd be okay with me calling them 'pecs' instead of 'tits', though I won't blame you for looking at them if I called them that."