Its just one of the everyday animations Tamagotchi's do.. It doesnt mean anything good, nor bad.. Though some of them are rather cute (are boys allowed to say that )
To exit the animation, press one of the button [a] or [c] preferably, so the screen doesnt change to show the clock.
That happened to me but it wasnt an animation where you press a b or c to exit it. Id just connected wiv my other tama and it sent it nothing for a present and when it returned it was on the bottom of the screen like when there babies. I connected it agen and wen it came back it was fine. Do u think i shud have punished it or something?