The phrase "how rude" is popularly associated with a GIF featuring Stephanie Tanner, a character from the TV show Full House, where she is shown screaming with her mouth open and the words "how rude" displayed next to her. This GIF is widely used to humorously express that someone or something is rude. Various online platforms like Giphy and Tenor host collections of "how rude" GIFs, including versions from Full House and other popular sources, making it easy to find and share these GIFs for conversational emphasis on rudeness or offense in a lighthearted way.
