I found this in a game called Quake 2.What the heck does it mean? A.H.D.S.S.I.B.H. bjjc?

Question

I was in the research lab level of the factory combat unit and I was exiting when i saw kill me written on the glass of a cell holding brain-washed marines.I busted through killed them went through the crawl tunnel and that popped up:A.H.D.S.S.I.B.H. bjjc
I have spent weeks tring to figure it out,HELP ME PLEASE!!!!!

Answer 1

Try here (if you haven't already)
http://www.eeggs.com/items/3476.html

Refers to the secret hallway at the end of the game - under the final bosses arena with info & snapshots of iD programmers

Answer 2

What do yo mean "poped up" like was i an in game effect? or was it a crash?