出自阿甘正传(Forrest Gump)
（甘的妈妈临死前）
上下文
Forrest:What's my destiny,mom?
Mom:You're going to have to figure it out for yourself.Life's like a bar of chocolate.You'll never know what you are gonna get.
后来甘又在等车时跟旁边的人说过的（他拿了一盒巧克力去看JENNY但他自己却吃了大部分...这句话出了好几次呢~