So guys.
I have these brilliant ideas on how to get seaweed brain to remember everything. Rick probably isn't going to do this in his book, but whatevs. A girl can dream, right?

PLAN A
Sing to him

Put this image in your head. Everyone finding Percy, and gathering in a chorus line to serenade him to remember. What do they sing? Well, sing these lyrics to the tune of Your Are My Sunshine:
You're name is Percy,
Your dads Poseidon
Du have a girlfriend,
Named Annabeth...
Oh Du don't know dear,
How much she loves you,
So please try to remember again..
Then Percy remembers, kisses Annabeth and they get married have Babys the end.


PLAN B
Do a play of his life

Yeah, I know it sounds weird. But wouldn't it be just be totally awesome if everyone put on a reenactment of Percy's adventures? And then at the last scene, with a fake Percy running hand in hand with a fake Annabeth, Percy just sits up and says "OMG I REMEMBER," and then kisses Annabeth and they get married have Babys the end.

PLAN C
Bother him till he remembers
So, Annabeth is a very mad Annabeth because Percy is being an idiot and not knowing who he is. So she takes matters into her own hands. Every five Sekunden she goes up to Percy:
"You remember?"
"Remember nowww?"
"What about now?"
"Now? Now? NOW"
"....now?"
Then Percy explodes because wise girl is bothering the seaweed out of him and everything comes back. So they KISS and get married have Babys the end.

Whatdya think? Du know, as long as everything ends up with Percabeth I'm cool with whatever happens :D