The fourth installment in the Excretion Manual series presents a detailed demonstration of women using male standing urinals for urination. With women's restrooms often crowded, this unique theme explores how females can utilize men's urinals. Most performers urinate after holding it in, resulting in abundant flow, captured in vivid detail by up to six cameras, thoroughly explained with intense fetish appeal. Defecation is shown in various ways, including through enemas and straining, with careful explanations of anal dilation after bowel movements and proper wiping techniques. Splashing and spilling during standing urination are also highlighted. Eight women wearing suits, school swimsuits, and yukatas demonstrate standing urination and defecation with intense humiliation and meticulous detail. This edition introduces new camera angles and features an exceptionally beautiful new performer. Packed with fetish elements, this work delivers both educational insight and sensual satisfaction regarding excretion. (Haietsuya) ※ Facial exposure in main video