Is a dangling preposition something up with which you will not put?

Answer 1

1) Actually, putting them at the end is NOT "dangling them. It is often the better, more natural English way to use them. (So, to make it clear, I'm fine with "dangling" particles, if they communicate well.)

2) The quip doesn't actually illustrate the point it's poking fun at. In particular, the key is an ADVERB, not a preposition.
http://itre.cis.upenn.edu/~myl/languagelog/archives/001702.html

3) Sorry to those who think Churchill originated the joke. It's quite possible he repeated it, and it did appear in a magazine he sometimes wrote for, but he was NOT the one who came up with it (though it's rather like him).
http://itre.cis.upenn.edu/~myl/languagelog/archives/001715.html
http://en.wikiquote.org/wiki/Winston_Churchill#Disputed_quotations
http://itre.cis.upenn.edu/~myl/languagelog/archives/002670.html

Answer 2

The little boy asked his father to read him a book, but the book was downstairs.
His father went down to get the book, then returned and prepared to read it to his son; however, it was the wrong book.
His son asked:

"Dad, what did you bring this book that I didn't want to be read TO OUT OF UP FOR?"

THAT sentence ends in FIVE prepositions!

Answer 3

Your quote is from Winston Churchill I think.

Reminds me of the joke about the guy who goes to Cambridge MA and asks a student, "Hey dude, where's Harvard Yard at?" The student replies, "You know, it is preferable not to end a sentence with a preposition." So the guy says, "OK, where's Harvard Yard at, a**hole?!"

Answer 4

Yeah, don't you know prepositions are very bad things to end sentences with!

Answer 5

Yes.