These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
YMMV: Gentlemen Prefer Blondes
Adaptation Displacement: Most people think of the 1953 film, but don't even know it was originally a musical or a book.
Harsher in Hindsight: Lorelei asking if three sleeping pills in the straight vodka is enough. Most people know how Marilyn Monroe died.
I Am Not Shazam: Several people who are familiar with this movie but have never seen it think the title is "Diamonds Are A Girl's Best Friend", after its famous musical number.
Sequelitis: But Gentlemen Marry Brunettes didn't get the two leads back, so it tried being about their daughters.
Strawman Has a Point: When confronted about her unabashed gold-digging Lorelei gives a pretty cogent speech pointing out that a man would want his daughter to marry into wealth, so why she shouldn't want that for herself?