Mom wouldn't lie to me.

Colleague: Your schoolbag is so beautiful, how much does it cost?

Child: One million.

The colleague laughed: "You're bluffing, how could your schoolbag cost one million?"

Child: "It's true, if you don't believe me, ask my mom!"

Colleague: "Your mom is pulling your leg."

Child: "My mom wouldn't lie to me."

Colleague: "She would, if you don't believe me, go ask her."

The child turns around and asks his mom: "Mom, what's 3+3?"

The mother replies: "It equals 6!"

The child then turns back to the colleague and says: "See, my mom doesn't lie to me!"