The "Lay Lay Lay" part is derived from a late 70's TV adaptation of Quartermass, which featured a cult of hippy type people who chanted "Lay lay lay" (or it could have possibly been "Ley" as in Ley lines). This also ties in with the "armageddon! This beautiful tree" line - Mark Smith taking the piss out of hippies, basically.
The "Lay Lay Lay" part is derived from a late 70's TV adaptation of Quartermass, which featured a cult of hippy type people who chanted "Lay lay lay" (or it could have possibly been "Ley" as in Ley lines). This also ties in with the "armageddon! This beautiful tree" line - Mark Smith taking the piss out of hippies, basically.