Trope = a plotline that's been done before.
I attempted some querying last week. Here's what it felt like I was writing:
Dear Estimable Agent,
Trope, trope, trope. Trope, trope, trope. Trope, trope all the way!
Oh, what fun it is to have a tropeful day!*
Here a trope, there a trope, everywhere a trope-trope.
E-trope, I-trope, Oooooooooh!**
Please represent me.
It's not! (Or is it? Or are all stories? Not going there now...)
The query obviously needs more work. :D
I just...thought...maybe you might like that little piece of information in my query-writing regime. :)
Maybe it will make you laugh?
*Old McDonald Had a Farm (you know, E-I-E-I-O?)