No— she should stick with the largest size. As tempting as it was to give Sammy a little brother, she would not be able to deal with a toddler Jacob any more than eight-year-old Jacob.
“Jacob, I bought a surprise for you at the store!” Leah calls out to her son cheerfully. Normally her tone of voice would be much less energetic, but with newfound hope for an easier time dealing with her son, Leah found herself more energized than she had been in years. “Come here and take a look!”
“I bet mommy didn’t buy you anything, Sammy!” Jacob teased. Used to the mockery, Sam simply stuck out his tongue at his brother.
Leah saw the disappointment in her youngest son’s expression, however, and mentally scolded herself for not remembering to pick something up for Sam as well. She made a mental note to pick something up the next day—although her youngest son’s present would be much less deceitful than the pull-ups she purchased for Jacob.
Leah was snapped out of her train of thought by Jacob ripping the plastic bag greedily from his mother’s hands, and pulling out the package of pull-ups.
“Are these… diapers!?” Jacob shouted in confusion.
“No, of course not! I remembered how much you liked power rangers, and remembered to buy you a new pair of undies with your favorite characters on them!” Leah could tell her lie was not doing much to dissuade Jacob’s unavoidable incoming tantrum, so she quickly brainstormed another approach.
“These don’t look anything like your brother’s diapers, see? If you really want diapers instead, I can go buy power ranger diapers for you.”
“I don’t need diapers!” Jacob retorted indignantly.
“If that’s the case, do you want to wear this big-boy underwear? If you would rather wear diapers like your brother—“
“I said I don’t need diapers!” Jacob interrupted. In a flash, he pulled down his shorts and briefs, and quickly hoisted up the pull-ups up to his hips. “See? Told ya so!” Leah did however catch a hint of surprise at the disconcerting thickness of the pull-ups, but afraid of his brother thinking he was wearing diapers, Jacob masked his surprise with a triumphant smirk.