DS aged four is starting to show an interest in space. I have always called the planet Uranus, not dissimilar to saying 'your anus'. DH says it's rude and it should be pronounced differently. I'm sorry I don't know how to write the sound out, but his way is more 'yer' than 'yur' with a different emphasis to avoid the word anus. I think his way sounds mumbled and just like someone not speaking properly.
AIBU?