The enjoyment in tootache

"Well, even in toothache there is enjoyment," I answer.  I had
toothache for a whole month and I know there is.  In that case, of
course, people are not spiteful in silence, but moan; but they are not
candid moans, they are malignant moans, and the malignancy is the whole
point.  The enjoyment of the sufferer finds expression in those moans;
if he did not feel enjoyment in them he would not moan.  It is a good
example, gentlemen, and I will develop it.  Those moans express in the
first place all the aimlessness of your pain

Dostoevsky Notes from the Underground