If it was my friend's little brother/sister, I'd probably say not to eat it all at once or they'd spoil their next meal.
If it was my girlfriend's little brother/sister, I'd use the kid as an excuse to kiss ass, and give him/her the lollipop as a reward for being a good kid. Unless the girlfriend was the girl I like, THEN I'd tell the kid not to eat it all at once. 😛
If it was some kid I was babysitting I'd tell him/her to put that in him/her trap and shut it. 😛 😆
j/k you "secret" keeping bastards. 😛