Monkey D. Luffy
Foxy the Silver Fox
I nominate Chopper
Chopper: Shut up! Nominating me won't make me happy or anything, you bastard!!
Luffy is going to be in the voting process anyway.. So I nominate Usopp because seriously. He needs to at least be nominated. Don't tell me he isn't that funny, because he cracks me up way more often than Zoro (even though Zoro has had some really funny moments as well).
I nominate Usopp too, he's been one of the funniest characters(if not funniest) for me since he took care of Chuu in Arlong Park then his unforgettable lies that Chopper always seem to fall for; including one of my favourite Usopp moments:
It's even better in the anime
Usopp deserves it so many funny moments he was giving us
Supporting Usopp! He's next to Luffy who made me laugh my ass off. His pretentious courage and his lies (especially when Chopper joined the crew).
Luffy and Usopp makes me laugh the hardest but I'm just so sure that they will enter. So I just need to add Buggy. A great comic-relief in the rather bloody serious (OP-standard) Impel Down and Marineford arc.
The most funny character is Sogeking. The introduction of this character was just one of Oda moment of genius which make One Piece so great.
I am going to support Luffy.
There are some other characters which are pretty funny too but as most of their actions are always relatively the same, it ends being too predictable and even boring.
Monkey D Luffy ... just pick a chapter and he will make you laugh (But avoid the 574th and ones in which he's being serious)
I nominate Brook
He's cracks me up! .....
Ussop, Luffy and Buggy are great. But I'll nominate Franky, since his intro he is hilarious plus his dual act with Robin grabbing his balls always makes me laugh!