[yarddog]

I had a friend who learned this one the hard way.

"Never corner a coward"

Just because he is a coward doesn't mean he can't fight. Always leave him an escape route.

[William Terrell]

Just because he is a coward doesn't mean he can't fight. Always leave him an escape route.

Immediately came to mind: if he's a coward, and your friend was willing to let him escape, why was your friend fighting him in the first place?