Someone who will understand, leave a message!

[Aggressor66]

[b!z]

I suppose it means that someone brings the person happiness, therefore "giving them a smile"

And they're holding onto that happiness, "wearing it"

Just my guess

[bitkilo]

That looks like the famous loch ness monster photo, which was fake of course, maybe they painted a face on it.
Again just my guess.

Another look, maybe its a shark that just ate someone, so it has the smile the victim had. Lol

[jameshenderson]

It means like, someone can bring happiness to other people, just the same as giving them a smile

[twister]

I think it means someone is missing someone who died at sea and they're thinking of him/her and thinking about all the happiness that person brought them.

[MemoryShock]

It means, "You make me happy".

[(oYo)]

It means, "Thanks Dad!" 

[Sundark]

^ That joker photo made my day Thanks!

[Watoshi-Dimobuto]

Probably means, I am happy because of you.

[Jamsheed]

You make me happy..

[Initscri]

With just the quote, I would take the interpretation of a need for someone. Such that, the person the quote is referencing makes the writer happy.

With the image in the background taken into account, I would replace the "person" with more of a worldly figure. As in; the world makes you happy.