In addition to reading excerpts from Brian Dennehy’s Wikipedia page, baseball announcers make broadcasts interesting for viewers by using colorful slang to describe what’s going on in the game. Here are some phrases you might hear the next time you're tuning in to baseball on the television:

Circus Catch: When a catch is made by a player who applies red lipstick to his nose before every game
Dying Quail: A line drive hits a pretty-looking pigeon
Mendoza Line: When an entire team is composed of players whose last and first names are Mendoza
Can of Corn: A player who looks like he could fit into a 128-ounce can of corn
Cup of Coffee: A pitch that makes a catcher yell, “Ooh, so hot!”
Barrel of Omelets: A home run
Full of Salt: Player makes a face as though someone just threw a handful of salt into his eyes
Brown Teeth in the Mouth: When it rains and the bases get muddy
Wheelhouse: A good name for a baseball-themed bar
The Artificial Moon’s Shining for All the Swingy Mens Who Keep Doing Things Against Each Other: Stadium lights are on