The last time a Simpson's eye sticks out was in "Lard of the Dance". In this episode, Bart is impressed about the family having its own 'monster' when both of Abe's eyes protrude right out of their sockets although it grossed him out in Lard of the Dance when Homer's eye bulge out while it was still in its socket.
The main flower is this episode is called Silvertongue. In "Lisa the Iconoclast", it is revealed that Jebediah Springfield had a silver tongue.
The coyote chasing the road runner is an obvious reference to the Road Runner and Wile E. Coyote cartoons.
The orchestral music accompanying the scenes of senior citizens playing outdoors is modeled on Mahler's Symphony No. 1 in D.