What is granny panties emoji?

I'm sorry, but there is no official "granny panties" emoji that has been released. The Unicode Consortium, the organization responsible for creating and approving new emojis, has not yet included such an emoji in their current list of approved emojis. However, there are various emojis related to undergarments, such as briefs, boxer shorts, bikinis, and thongs, that can be used to represent different types of underwear.