HARRY
No, if you think I'm gonna let everyone risk their lives for me, l...

RON
Never done that before, have we?

HARRY
No. No. This is different. I mean, taking that, becoming me. No.

GEORGE
Well, none of us really fancy it, mate.

FRED
Imagine if something went wrong, and we ended up a scrawny, specky git forever.

Harry Potter and the Deathly Hallows - Part 1 - Movie - Chapter 1 :
See this quote in the Pensive -