SDJS-326 "Why does deep throat juice flow?" Five SOD female employees research the slimy, sticky, and climaxing throat juices caused by deep throat stimulation. SOD Sex Science Lab Report 20

SOD Sex Science Lab: As a company involved in sex, this is an original SOD institute that seriously studies erotica, aiming to develop the sex industry and expand sexual knowledge (helping to develop products and services, and constantly updating sexual common sense by disseminating information to society). This time, the theme is "Irama juice" generated by deep throating. Led by lab researchers, female SOD employees put their bodies on the line to explore this.