Safety!Both Johnny Carson and David Letterman have been known to use pencils with two erasers as stage props, to avoid poking anyone with the sharpened end.
en.wikipedia.org/wiki/Pencil#Notable_pencil_users
(en.wikipedia.org/wiki/Pencil#Notable_pencil_users
RedHouse over yonder,
Thu 11 Aug 2011, 11:21,
archived)