Justice League members seem to have some pretty strange notions about when they should actually step in to help somebody:
"...'cause, you know, damned if we're gonna help Green Lantern unless he follows emergency signal protocol or says 'pretty please.'"
Of course, Hal may just be stuck in the bathroom -- in which case Superman's attitude is perfectly understandable.
(But then ya gotta wonder, why is Superman spying on someone in the can ...? Ahh, never mind.)