I think Marluxia got mad at Sora for calling him Marly rather than his rude remark during their important battle. XD
I usually dislike bathroom jokes (even tho I made this XD) but I'll let it slide once in a while. >_>; It's the first thing that came to my mind when I saw this so yeah XP
I'm sorry if it disturbs you OTZ
I'll have a better card ready next time

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Screenshot taken from Kingdom Hearts 2 Opening (Youtube)

Sora & Marluxia © SQUARE ENIX

edited with Arcsoft PhotoStudio 5.5