Is there a board game called chexcalibur?

There is no board game called "Chexcalibur". It's likely a humorous combination of "Chex" (a breakfast cereal brand) and "Excalibur" (the legendary sword of King Arthur).

If you're looking for a board game related to King Arthur or the legend of Excalibur, there are many options available. Some popular ones include:

* King of Tokyo: A dice-rolling game with a monster theme, where players battle for control of Tokyo.

* King Arthur's Knights: A cooperative game where players work together to complete quests and defeat enemies.

* Merlin: A social deduction game where players are secretly assigned roles, including Merlin and Mordred, and must deduce who is who.

* Avalon: A similar social deduction game to Merlin, but with a different story and characters.

If you're interested in a fun and silly board game, you could always try creating your own "Chexcalibur" game!