Music Video Giant Woman 90s Sometimes In Old Posters Or Images, I Often See Naked Women Sittng Relaxing Inside A Giant Martini Glass..?

Sometimes in old posters or images, i often see naked women sittng relaxing inside a giant Martini glass..? - music video giant woman 90s

Sometimes, old posters or pictures, I often see women naked in a giant martini glass sittng relax .. What is it? I do not understand it .. In one example, a little more modern, the singer Beyoncé Knowles sits in a martini glass just 2 minutes and 26 seconds in his music video entitled 'Naughty Girl'. So what's the deal with that?