How can I convince my girlfriend that my parents are not rich?

I got a laptop for my 11th birthday and my friends now think that my parents are rich, but that's just a very small laptop. And that was a community gift my parents didn't pay for it themselves and now I can't convince him that my parents are not rich

I thank you in advance for answers!

Maybe there are more important things in life than what others think about your parents' balance?