Jalapeña
Jalapeñas is the feminine plural of jalapeño. Jalapeños are a large chili pepper that are known for being quite spicy. While Elisa Maza was undercover, she and Tony Dracon shared a jar of them, which was later given to Broadway. After Dracon was arrested, Goliath tried a jalapeño, which he then subsequently yelled out "Jalapeña!"
Since then, "jalapeña" has become something of a curse word among the Manhattan Clan.
Behind the Scenes
Keith David used to shout out "jalapeña" as a replacement for "halleluia". He picked that up from a Blues singer named Bernadine. Voice Director Jamie Thomason bet Greg Weisman he could not work that into the show, and Greg bet that he could. Later, Gary Sperling wrote and story edited "Protection" (poor, innocent Gary Sperling), and Greg worked in a little subplot involving jalapeño peppers, so that at the end, Goliath would shout "Jalapeña!"
Frank Paur, and others who worked on the show hated it.