"FullRubber" is a porn video tag indicating that the content features individuals wearing full-body latex or rubber fetish suits. This can include tight, form-fitting garments that cover the entire body, from head to toe. The term "FullRubber" is often used in the context of BDSM and kink communities, where such attire may be worn for erotic purposes or as part of a scene or roleplay. This tag signifies that the video focuses on individuals dressed in this specific fetish wear and can include activities like bondage, domination, submission, and other kinky acts involving full-body rubber suits.