"Eat a sandw-" Adam hoped Tristan meant that in exactly the innocent and literal way it sounded, and wasn't another example of gay terminology he knew nothing about.
Seeing the movement out of the corner of his eye, he glanced aside to see what Tristan was doing, a look of mild curiosity crossing his expression. Also, the feeling he should reach over and stop him. He was too late, and, as it turned out, correct about feeling he should've stopped him.
"Oh, no no no. Getting into dating sisters is rocky territory, and you and me aren't ready to go there just yet." Despite that, he was vaguely amused that Tristan seemed to break the old image of a brother warning guys away from a sister. Amused, yet not surprised. Tristan was, it had to be said, unique in all kinds of ways. "Especially because I'm sure that's the Gabriella I've known for years. If I hook up with anyone, this'll have to be something I do on my own."