Teaching it probably isn't possible, and even if it were, Leo wouldn't know the first thing about doing it. But he doesn't get time to clarify.

Leo only looks over curiously as the little robot appears. He's very used to this sort of thing, with Donnie's drones and particularly Shelldon zooming around. V's pleased expression when they see the little bot is familiar, too...

He pushes away the homesickness quickly, giving a smile and a little wave to M-Bot.

"Nice to meet you, little guy," he says, because it's only polite - if M-Bot has any level of self-awareness, anyway.