Velma Losing Her Glasses Was Improvised
One of the running gags throughout the series is Velma losing her glasses and crawling around on the floor aimlessly saying “My glasses! I can’t see without my glasses!”
That line was actually not written into the show, but rather, it happened by accident in a table read. The original voice of Velma, Nicole Jaffe, lost her own glasses and made the exclamation in Velma’s voice. The producers loved it and wrote it into the script.