There are few things that aggravate me more than hearing children say "what the ______." They leave the blank in because their friends leave it blank. Everybody does it. There isn't any harm as long as they don't actually say the last word out loud. Besides, it's cute when a kid cusses.
omission of the "h" word or the "f" word does not mean the word isn't
there. Everyone who hears someone say "What the _____" knows full well
the expletives that fill in the blank.
Spoken out loud or not, a cuss is a cuss.
Why do we accept this from children?