cenosilicaphobia

From Ancient Greek κενός (kenós, “empty”) + silica (glass) + -phobia.

cenosilicaphobia (uncountable)

1. (humorous) The fear of having an empty glass when drinking.
   • 2011, Natalie MacLean, Unquenchable!: A Tipsy Quest for the World's Best Bargain Wines‎^[1]:

     His next question takes me by surprise: “Have you ever suffered from cenosilicaphobia?” Huh?

   • 2019 April 10, sailorgarynavy, “Walmart Bar Jokes”, in sailors-clean-humor‎^[2] (Usenet):

     Cenosillicaphobia is a real thing and it affects many people. What is it exactly? It is the fear of an empty beer glass.

   • 2020, Howard Linskey, The Little Book of Pintfulness‎^[3]:

     We've all suffered from cenosillicaphobia at some point in our lives.