DON'T DO THIS:
https://scholar.google.com/scholar?q=Journal+of+Gastrointestinal+Surgery,+9,+747%E2%80%93749&hl=en&as_sdt=0&as_vis=1&oi=scholart
Of course everyone has heard of the guy with the concrete enema and the book STUCK UP that I posted a few years ago and available on Amazon.
Other references to catastrophic enemas:
Denko JD. Klismaphilia: Enema as a sexual preference. AmJ Psychother 1973;27:232–250.
Cappell MS, Simon T. Fulminant acute colitis following aself-administered hydrofluoric acid enema. Am J Gastroent-erol 1993;88:122–126.
Herrerias JM, Muniain NA, Sanchez S, Garrido M. Alcohol induced colitis. Endoscopy 1983;15:121–122.
Barton JL, Terry JM, Barton ES. Enema abuse. Br J Psychiatry 1982;141:621–623.
Eisele JW, Reay DT. Deaths related to coffee enemas.JAMA 1980;244:1605–1609.
Barone JE, Yee J, Nealon TF. Management of foreign bodies and trauma of the rectum. Surg Gynecol Obstet 1983;156:453–457.
Eftaiha M, Hambrick E, Abcarian H. Principles of management of colorectal foreign bodies. Arch Surg 1977;112:691–695.
Kingsley AN, Abcarian H. Colorectal foreign bodies: Management update. Dis Colon Rectum 1985;28:941–944.
Elam AL, Ray VG. Sexually related trauma: A review. AnnEmerg Med 1986;15:576–584.
Michael D. Hellinger. Anal trauma and foreign bodies.Surg Clin North Am 2002;82:1253–1260.
Ahmed A, Cummings SA. Novel endoscopic approach forremoval of a rectal foreign body. Gastrointest Endosc 1999;50:872–874.
Stephens PJ, Taff ML. Rectal impaction following enema with concrete mix. Am J Forensic Med Pathol 1987;8:179–182.