1 Editor-in-Chief, Lymphatic Research and Biology (2002 - Present) 2  Chair, Scientific Advisory Committee, Lymphatic Research Foundation (1999 - Present) 3  Director, Stanford Center for Lymphatic and Venous Disorders, Stanford University (2000 - Present) 4  Chief of Consultative Cardiology, Stanford University (1997 - Present)
A BDSM-style collar that buckles in the back. Detail of collar showing D-rings. In a BDSM context, a collar is a device of any material worn by a person around the neck to indicate their submissive or slave status in a BDSM relationship. A person wearing a collar to symbolize their relationship with another is said to be collared.
Bareback sex is physical sexual activity without the use of a condom, especially male to male anal sex. A slang term, bareback sex comes from the equestrian term bareback, which refers to the practice of riding a horse without a saddle. It therefore has the connotation of being wild, dangerous, and fun.