Whoa...hold on...
First: The only Tamagotchi that has twins is the Angelgotchi (only available on eBay). Second: the one that "me me all me" was talking about is probably the Osutchi/Mesutchi "mating Tamagotchi" pair, also limited to eBay. Third: Technically, there are twins on the V1/V2 (when you mate two Tamagotchi and the female has two babies), but they only stay on the same screen for about a minute. Then one of the babies transfers to the father.