A tendency to see the world in the most basic terms as consisting fundamentally of bodily functions and the fulfillment of appetites and desires. The term derives from the imagined perspective of testicles during the sex act and during the process of defecation.
He: Bob's a nice guy, but he's sometimes difficult to take because he is so cynical!
Friend: Yeah, he's got a real balls-eye view of the world.
Friend: He only sees what your testicles would see when you're banging someone or taking a crap -- assholes, piss, falling shit ....