Here's mine from Tristram Shandy by Laurence Sterne:
My thoughts: OMG, not another stream of consciousness writer (yes, indeed--and the great-grand-daddy of them all, seeing as this was written in 1768)! And: Is he ever going to put a period on this sentence?!!
If I hadn't signed this book up for so many challenges and determined that this time (the third try) I really was going to finish the darn thing, I think I would have thrown it out the window by now. I'm on page 134 so far.