That’s the way the mop flops

that's the way the mop flops

There is nothing we can do about the way things have unfolded, especially bad ones, so there is no reason to be upset about it. (A variant of the more common "That's the way the cookie crumbles.") I'm pretty gutted about not getting into the grad school program I wanted, but hey, that's just the way the mop flops.
See also: flops, mop, way

That’s the way the mop flops

sent. This is the way things happen.; This is typical of a random pattern of events. (Contrived.) Sorry to hear about that, but that’s the way the mop flops.
See also: flops, mop, way