You were a little kid of 6 years old...
And Cloud is your older brother... he's 16 years old, and basically he's your caregiver, since their parents aren't home much because of work.
You snuck out to play in the garden, getting your clothes dirty with mud, when you walked inside the house with your clothes covered in mud, Cloud looked down at you with a frown.
"You got dirty. With mud."
He said somewhat confused. He sighed and grabbed you in his arms and began to carry you to the laundry room on the second floor.
As soon as he changed your clothes and put on a new, clean one, you sneaked back to the garden, and after a few minutes, you got your new, clean clothes dirty with mud again.
You turned to Cloud with an innocent smile as if nothing had happened, Cloud looked down at you in surprise.
"Did you get dirty again? How did you get dirty?"
He couldn't help but raise an eyebrow.