My two year old is confused

Jessica • Married {05-11-13} Mommy to two beautiful little boys Kobie {9-2-13} & Kruz {4-7-16}
My son 100% believes HE has the baby in his belly! 😂😂 he will run up to me with his shirt lifted saying "Look baby" and I will say no the baby is on my belly and he pats his and says no mine! He lays on the bed with the Doppler and says baby heart with it on his stomach 😂 if my husband kisses my belly he has to kiss his too! It's so funny!!