Heat expansion

Me: Ay boy ah..why your lips getting thicker and thicker ah?

Bro: Who say? It's kissable lips ok..*gives the kissing pose*

Me: Yucks. But really..it's getting thicker..

Bro: It absorbs heat from the sun, so now it's of a darker shade..

Me: I don't mean the colour..I mean the thickness. Looking more and more like sausage.

Bro: Yah. It's darker colour now, so absorb more heat. Then it expands..that's why my lips got thicker..

Me: *lol*

Bro: U know why eskimos are short?

Me: Why?

Bro: Cos their place is too cold..so they all shrink. Then do you know why Negros are tall?

Me: Why?

Bro: Cos their place very hot. So, their skin colour's black and absorbs heat. That's why they all expand under the heat..

Me: *lol*

Bro: You know why ppl who live in hot countries fall sick after they come back from cold countries?

Me: Because...

Bro: Because when they come back here..very hot..then all their internal organs expand...and when their body can't accomodate their expanded organs..they all fall ill..

Me: *speechless*