Greetings around the world performed with this? (2-2)

I haven't cracked this one yet — but the brilliant team at Fifteensquared have:

Not sure if this is meant to be a sort of CD/DD or &lit. I assume the greeting is as in "Yo, buddy", which I imagine is fairly international. I don't think "this" on its own is enough to identify yo-yo but not sure either if a yo-yo is something you'd use for greetings, so maybe the &lit doesn't quite work.