A, ahhh. E, ehhh. I, iii.

Your dad is teaching you your vowels. Every morning and evening, he looks at your little face and goes through all the vowel letters and soft vowel sounds. A, ahh. E, eeeh. I, iiih. O,oooh. U,uuuh. You seem to like it because shortly afterward, you reward your dad with a big poop and a trip to the changing table.