I just forwarded a message I had received to myself then opened the forwarded message in raw source. Both my forwarding header and the header from the forwarded message were visible.
Alternatively you could open the fishing message, show it in raw source then select it all (⌘A), copy the selected text (⌘C, then paste the entire thing into the reporting message (⌘V), and send that.
"All you've got to do is own up to your ignorance honestly, and you'll find people who are eager to fill your head with information" --Walt Disney
