Watch my dead former self hit my future self with a silent BFG aftermath with
the projectile completely out of view.

Demo recorded in map01 with Doom2.exe v1.9 by Gokuma
Site Address            : http://gokuma.neocities.org

Usage:
doom2 -playdemo mjrsarse

At one part neither player (both controlled by me) does anything for about
a minute.  Be patient.  The demo hasn't messed up or anything.  During that
time I'm moving around my controls so I can pull the entire trick off.  It's
extremely difficult with my computers being in two different rooms and the
one's keyboard cord only reaching to the entryway between the rooms.

This demostrates how it is possible for your former self to hit your future
self with a silent BFG aftermath with the projectile completely out of view.

This demo was recorded in coop mode on skill 5 (maximum damage) and
no monsters.  This can be done in deathmatch but the starting points are
random.  Oddly, it doesn't subtract a frag when you commit suicide in the
third degree.  The game must count your different selves as separate
entities.  On turbo 255 you can run through your own projectiles, but when
you respawn after dying, you're perfectly vulnerable to any of your
projectiles that are still flying through the air.  (Also note that removing
the projectile bit from a projectile with dehacked will cause it to explode
inside you when you shoot it but not hurt you.)

Thanks to myk, deathz0r, Torn, and 999cop who I originally found out from
that it's possible to kill yourself with your BFG aftermath.