Alcohol milk?

Last night, me & Yoshi were home alone. While he was having his milk before bedtime, I was eating my dinner right next to him. Wasn't paying attention until I hear the sound "HEA!!". Yoshi was trying to get my attention. Then when I turn around, he laughed so hard. Obviously he was playing with his bottle as well. So in return to get his attention, I "HEA!!" at him as well. (u might wonder if I have accidentally add some alcohol into his milk?!)