The title is a parody of the Yoga Practice of "Saluting the Sun".
The message on the chalkboard in this episode reads "No Prehensilizing".
Jessica Hynes, Dylan Moran,& Tamsin Greig were in Shaun of the Dead.
A sociopath is superficially charming but secretly is manipulative and sadistic. An "inverted sociopath", presumably, recriminates himself for being a functioning member of society.
Jessica Hynes saves Simon Pegg & Nick Frost in "Shaun Of The Dead" which also featured David Walliams as a News Reporter, Dylan Moran, Tamsin Greig,Lucy Davis & Peter Serafinowicz.