You were talking about sisters, but you translated it into the masculine gender... so what's there to think about?
What boys are you talking about? Do you think I keep some random guys around here like kittens or something? And maybe even breed them? Okay, if I were a sheikh and had servants, maybe that joke would make sense, but even then it would be too rude, because we're talking about people, not goods.
So, he's pretending to be offended... :cool: