A portmanteau of "Karma" and "
Armageddon." References "shit hitting the fan" in an extreme
way while acknowledging one's contributions to that event.
Specifically, when all the (usually unpleasant) stuff you've done comes back to you at once.
The only
way out is to take your licking, batten the hatches, pull back, and deal with the stuff one by one.
Man, my license was revoked for not paying those speeding tickets, my car
got the boot from those unpaid parking tickets,
bill collectors are calling, work's a mess from my calling in "sick," and
my girlfriend found out about the affair when the other girl stopped by our place... Argh, it's karmageddon!