It's a rather quick remark, tilting his head to the side as he brushes a finger over the bridge of his nose.

"No one asked. 'sides, I didn't know I could use my powers until we were fighting that monster by the big chicken ra-"

His sentence stops suddenly, his body bursting into another plume of smoke so that the pint-sized Luffy was now back in his usual form.

"Phew! That's better! Any ways, I didn't really need to use my powers for anything, so I never noticed."