18:24 And call ye on the name of your gods, and I will call on the name of the LORD: and the God that answereth by fire, let him be God. And all the people answered and said, It is well spoken.
18:25 And Elijah said unto the prophets of Baal, Choose you one bullock for yourselves, and dress [it] first; for ye [are] many; and call on the name of your gods, but put no fire [under].
18:26 And they took the bullock which was given them, and they dressed [it], and called on the name of Baal from morning even until noon, saying, O Baal, hear us. But [there was] no voice, nor any that answered. And they leaped upon the altar which was made.
18:27 And it came to pass at noon, that Elijah mocked them, and said, Cry aloud: for he [is] a god; either he is talking, or he is pursuing, or he is in a journey, [or] peradventure he sleepeth, and must be awaked.
Or “busy”
My understanding of busy is basiclly “on the toilet”