Tough luck for the kid who had to eat the lemon.
So cute! The Sour Shock kicks in at the 0:23 mark, and the puppy makes the best sour face ever.
You'd think after this reaction the kid would avoid that candy like the plague.
This trick is one of best perks of parenting. You know the face kids make when they taste something really sour? Yeah, that one.
Feeding babies lemons is a national sport in civilized countries.