Some guy who thinks you're his buddy, bro, or pal while patting you on the back when he leaves you, a douche that just walks a way giving you this unexpected pat, though you never talked to him and don't know whether you should have said a word with him before he left or not, hmm what to do situations, situations...
A device containing vinegar used for cleaning a dirty and/or smelly vagina. Dirty vagina could be caused by having excessive sexual conduct with one or many partners prior to showering. Smelly vagina could be caused by not washing a dirty vagina. Some vagina are just smelly and need a douche anyway.