I've been eating lots of cherries, friends dd (3 years) copies her big sis and bites around the stone, my ds (15 months) I bite one half and give the other to him.
My mindee (2 years) eats them whole - stone included! I panicked when he did it (choking, etc) and stopped him, when I told his mum she says he does it all the time.. think it's put me off buying cherries (that, and they're like £6 a bag.)