You can't un-write a song you've written and posted publicly.

And I don't think there can be any time limit for a serious song about anything. And a satire is serious, however funny it might be on one level.If it's not fundamentally serious, it's not satire.

Fun songs are maybe something else, - but I don't really think time solves that one either. I personally get queasy at the way people sing The Titanic as a fun song. I was somewhere where that was happening the other day and I was thinking "I wonder how long it'll be before people will feel able to sing about September 11th in the same way?"

It's not just about respecting the feelings of relatives, it's about accepting our shared humanity with the victims, however long ago. "Little children wept and cried as the waves crept over the side..." That could have happened yesterday, or tomorrow, so what that it happened in 1912? The song would still be about what happened yesterday and tomorrow.