Name of that song
 

Hi
There is a ringtone in samsung. Link here:
youtube[dot]com/watch?v=lSMwy81KUXM
(please replace [dot] with "."
There is a song with similar music.
Hint1: I heard the song on grooveshark
Hint2: The singer laughs in the song.
Thats all I know :(

Can someone tell me the name?
Regards