ichibichikom

Bell: I've gained, like, five kilos since I came here.
Zoe: How many stones is that?
Bell: How much is a stone?
Zoe: I don't know..!
Bell: One kilo is the weight of one litre of water.
Zoe: That's not very helpful.
Bell: Well, what weighs one stone?
Zoe: ... A baby..?