Umm, ok, hers & DS's (he had to do it too, lol) did go into a slight heart shape at the end, but only when they sort of changed the shape of their tongue IYKWIM?
& yes their tongues come out...near half way down their chins, lol.

On an intersting note...i have noticed that under my tongue is different to theirs. & mine doesn't go out very far?? I'm going to google pics...