When large numbers of people engage in oral sex in alternating face up/face down positions forming a circular group of people. An individual engaged in daisy chaining will be giving oral sex to one person while receiving oral pleasure from a different person (at the same time). Probably referring to a ring of intertwined bosies having a similar shape and arrangement to a flower arrangement used as a tiara.
"We had, like, 20 people in our daisy chain last night."
by Dave A. Jones May 04, 2005