luffy has no filter.
'oye viejo!'
ace clamped his hand over luffy's mouth, 'you can't call him that, thats rude!'
'well what am i supposed to call him. he's your dad, not mine,' came luffy's muffled reply.
'i don't know, just not that,' ace hissed.
luffy nodded, face serious as he racked his brain for an answer.
'well since hes your dad and not mine.'
'mhm,' ace waited for his brother to finish his thought.
'that makes him my tio. right?'
'thats right.'
luffy cheered.