|1.||These things happen|
usually used with the words "I suppose...." before "these things happen." A phrase which is similar to shit happens and it is what it is. This expression, though, implies that the action that caused the saying of the phrase was so hopelessly terrible to the speaker, that him/her don't have anything to say, and use it as a means of justifying the terrible event.
1: Damn, I just lost my kids in a court case.
2. These things happen.