There is no definition because it isn’t a word and never has been. Anyone who believes that there is a word like that is wrong and needs to check his/her vocabulary.
There isnt an example because there is no such word as leniency.
whenever a woman comes to work wearing boner inducing clothing (see: bonerwear), boner leniency is granted to prevent a sexual harassmentsuit when the offending man is spotted with a boner.
Of course i was offended by his boner, but i deserved it because of my bonerwear... and he deserved some boner leniency.