Expert Answers
malibrarian
| Certified Educator

There are probably far more than 5 quotations about lying in this book (dozens, hundreds perhaps?), but I think that a careful read of the story would give you those quotes far better than an eNotes editor could (or should).
If you have more specific questions regarding the theme, characters, or other aspects of The Adventures of Huckleberry Finn, I hope you will write back. Good luck!