A cautionary report:
“A Rare Form of Burn Injury Sustained During Defaecation,” O. Nahlieli,A.M. Baruchin, E. Eliava, and L. Rosenberg, Burns, vol. 25, no. 5, August 1999, pp. 463–4, DOI 10.1016/S0305-4179(99)00019-4. [AIR 16:2]. The authors explain:
A 20-year-old painter, soon after concluding his work, poured residual thinner fluid into a toilet without flushing it. After a while, sitting on the toilet seat he dropped a cigarette into it, thus, igniting the thinner. On admission to the emergency room, it was disclosed that the patient had second-degree burns of the buttocks. The pattern of distribution of the burn fitted exactly to the shape of the bowl without involving the anterior portion of the body