Wow, all of you present views which are very varied! I like that a lot!!
It seems to me that fathers are rarely treated as good ones in films, as neither are Ennis and Jack's in the BM film!! The peeing mention in Annie's story, as well as in the film, is exential in both, for me!! As a spectator to understand not only the times (before, during and after the sixties, but also how Ennis and Jack become to accept and love) each other, since each grew up nearly alone mentally in some ways, and that makes it surely a common thought for bonding!! I was always surprised and shocked that Ennis allows Jack to kiss him in that second tent scene of tenderness, and much more so when Ennis does kiss Jack!! Why? The pissing acts helped??
Hugs!