1 Suddenly, without rhyme or reason, his mood changed.
2 He picked people on a whim, without rhyme or reason.
3 His wife scolded him endlessly, without rhyme or reason.
4 He can't bite anybody's balls off without rhyme or reason, can he?
5 Sometime, men are frail, too, and feel turndown without rhyme or reason.
6 Her filing system seems to be without rhyme or reason.
7 Government money was given out to some people and not to others, apparently without rhyme or reason.