offensive phrase uttered by innocent three year old

[witchandchips]

really not sure what to do. Ds is at the stage of making up nonsense words cos he enjoys their sounds e.g plinkety plonk plonk songer songer. what do you do if one of them is actually a racist (albeit old fashioned)term. How can i tell him not to say it without going into details that will only make him conscious of something that he is perfectly natural about (he describes people as brown rather than black iyswim)

you ignore him because it's just nonsense

yes ignore him

or rather ignore it

Message withdrawn

but what if he starts shouting and singing it in public?

ignore! Nothing else really otherwise it will become a big issue and he'll do it to annoy.

Message withdrawn