PDA prayer
n.— «More common to daily life, users are seen engaged in “PDA prayer,” which Ogasawara describes as occurring regularly at boring meetings. The device is held low, just below desk level with the user looking down, presumably at folded hands.» —“Wireless world at their fingertips” by Erika Engle Honolulu Star-Bulletin (Hawaii) Mar. 10, 2002. (source: Double-Tongued Dictionary)