Do you know what tree this is?

Pokok rambutan dekat depan rumah all this while, and I've never even notice! Ada rambutan kat rumah so; I asked, "mane dapat?" 

adik jawab,"pokok depan rumah..." 

and i was like, "depan rumah ada pokok rambutan? since when?" 

There, it hit me on my face when my dad heard and was laughing at me... Duhh, I can't recognize a tree till I see it's fruit (if i know what fruit it is!). Malunyaaa... -___-"