NPR's guide to the running gags from the show.
... loves juice.
9 episodes feature this joke:
Lucille unloads juice from her groceries.
Lucille asks Lupe to clean up some juice glasses.
"Where'd Annyong get that juice box?"
"Give my son the juice!"
"After Buster's second juice box ..."
Buster thinks Lucille's wine is juice.
Buster drinks a box of juice at the office.
Buster brings a juice to his turtle.
Lucille Austero is juicing, and Buster is worried about joining her. He relents: "Let's get juiced."
Related Joke: Ostrich troubles
Sources: Joke data compiled by Adam Cole / NPR. Episode metadata from The TVDB via a Creative Commons Attribution 3.0 United States (CC BY 3.0 US) license.