You probably mean a Copo Americano (American Glass) [1]. Also note, that eating glass is also a common magic trick, David Blaine is famous for doing it [2], I'm not sure how real are the glass though

[1]: https://en.wikipedia.org/wiki/Copo_americano

[2]: https://youtu.be/MewROa1EU_o?si=Vysz1UfyWV44AEd_&t=83