I have related this one before - when I first started this blog. For the benefit of new readers and followers I'm telling it again.
One day I was teaching our son, then about four or five, the anatomy of a goat, guided by a big outline picture of the animal. Each time I pointed to a part of the animal and said out what it was my son would follow suit.
When I said "leg" he would say "leg". On and on we went from one anatomy to another. When we came to the head I pointed to the sharp protrusion on the head and said "horn". He pressed his little finger to the horn and said loudly: "Pon!", "Pon!"
Fast forward some thirty years, his wife asked their four year old son: "What is lembu?"
(Lembu is cow in Malay). He said "I don't know"
Mother: "I'll give you a clue - Moooo.....?"
Son: "Muruku!" (Murukku is an Indian savory snack made from rice flour).
Mother: slaps forehead.
Son: Mama, why is six afraid of seven?
Son: Because seven eight (ate) nine!
Mother: slaps forehead again.