Conversation with my 3 year old yesterday was unbelievable.

Is it just my kid that ask l questions like these?

My son yesterday was like

Mummy why your tummy so big big

I was like well, you already know because of the baby, he was like yes, so then I asked him where is the baby? He was like in your tummy. I said OK!! Then he'll turn and asked me, Mummy but how your tummy big and who get your tummy big? I paused for a bit, honestly I began to get confused, because I couldn't believe I'm having this conversation with a 3 year old lol so I then told him, after I laughed my ass out 🤣 when your daddy comes home as him who got mummy belly so big lol He was OK mummy but I want my tummy big like yours 🤣🤣🤣🤣