Uranium glass of uranium glass is pale yellowish-green, which in the 1920s led to the nickname vaseline glass based on a perceived resemblance to the appearance of petroleum jelly as formulated and commercially sold at that time. Specialized collectors still define vaseline glass as transparent or semi-transparent uranium glass in this specific color. Vaseline glass is now used as a synonym for any uranium glass, especially in the United States, but this usage is not universal. The term is sometimes carelessly applied to other types of glass based on certain aspects of their superficial appearance in normal light, regardless of actual uranium
What It Feels Like for a Girl played song on European radios, holding the top position for five weeks. In February 2001, English filmmaker Guy Ritchie, Madonna's then husband, said that they were planning to work together on her new music video; "creatively, we like the same sort of things, so it just makes sense". One month later, Madonna revealed to Ingrid Sischy that the video would be for "What It Feels Like for a Girl", which she found "ironic because [Ritchie]'s such a macho man, and his movies are so testosterone-driven, but I asked him a long time ago what song on the album he responded