I'm pretty sure I remember one scene in a Niven book in which someone weaponizes it. It must be at least twenty years since I read it, so my memory is extremely

I'm pretty sure I remember one scene in a Niven book in which someone weaponizes it. It must be at least twenty years since I read it, so my memory is extremely hazy, but I vaguely think (1) the viewpoint character, who is probably Louis Wu, is shocked and offended that anyone would do that; (2) the weaponized-tasp-wielder might possibly have been a Pierson's puppeteer; (3) it happens near the start of the book (or story?); (4) the narration of the event occurs in close proximity to an instance of one of Niven's "there ain't no X" abbreviations (TANJ, TANSTAAFL). (Wireheading is also used in a drug-like way; the aforementioned Louis Wu is an ex-addict.)