D2: (Looking at D1) Ewwww
D1: Not me-lah. It's baby. I don't fart small-small.
Me: Then? You fart big-big?
D1: No, I fart medium. You think I fart like "kerbau" ah?
Why he used the word "kerbau"? Because his teacher told the class not to "mandi kerbau".
kerbau = buffalo
mandi kerbau = To bath like a buffalo meaning to not bath properly.