Sami was in Mom's tummy.

Step #1: Buy a puppy. Step #2: Buy a stethoscope. Step #3: Feed puppy a huge meal. Step #4: Listen to all the awesome gurgling sounds in the puppy's little tummy.

Dad, why does Mom have a big tummy?" "Because she has a little baby growing within her and that baby is going to be your little sister."

Sami's dog likes it when you rub his tummy.

My tummy hurts.

Why does Skura have a big tummy?" "Because she has a little baby growing within her."

Your tummy's growling.

I could hear my tummy rumbling.

My tummy is not happy today.

Tom has a tummy ache.