This is true but some may be amused. My youngest descendant, 6 and super-cute, spotted the horrible graunch on the n/s rear quarter of the jalopy, and asked herself what had caused it.
'Grandfather accidentally scraped it against the deer fence, darling.' Short pause.
'Did he say the F word?'
Heh heh... only about 50 times... but herself didn't admit it to the nipper, just changed the subject.