What did Madara mean by "showing our guts"?


In the latest episode (filler, obviously...) of Naruto Shippuden, episode 368
the expression

> "to show your guts"

was flying all over the place. I've tried Googling around, but didn't manage
to find what it meant.

* * *

I think it means something along the lines of _showing your most inner
feelings_ , but I'm not entirely certain.

PS: English isn't my native language, so don't judge.




From context and the discussions in the show about the reasons that wars
persist and continue (bits and pieces from Nagato, Naruto & Jiraiya at
different points in time) - they are talking about how people cannot discern
emotions and thoughts of others directly, meaning people cannot know the true
feelings of others. Which in turn causes misunderstanding, differences in
opinion and emotion to the end result of conflict, culminating in war.

Given this overall theme, I think it is reasonable to understand this
(possibly mistranslated phrase) to mean - show our internal
feelings/emotions/thoughts to the other (internal <-> guts).

