According to ‘Dorsetshire Folklore’ by John Symonds Udal (1922), this hill features in a couple of connected local sayings:
“As much akin as Leuson Hill to Pilsen-Pen” implies people who are near neighbours ‘but neither relations nor aquaintance’.
“As far off as Lewedon Hill from Pillesdon Pen” denotes ‘a distinct severance of friendly relations between near neighbours.”
Lewesdon and Pilsdon Pen are indeed very close; and according to the info on Magic there are four hillforts overlooking this end of the Marshwood Vale “representing an unusual concentration.”