Short for 'Can I Be In Beta', often in reference to the constant 'pick me pick me, I'm *qualified*' type questions that spring up on forums and message boards during invite only betas.
person1: yea dev1, I had a really cool desert called blahblah when I went out to dinner tonight. Did you see that sports game on tv too? I watched it from the bar.
person2: I think I am quite qualified to be in the beta...
person3: I want the beta so bad
dev1: yea did you see the part where so and so scored that goal?
Person2: I have helped run a Game server, have a good vid card, good at bug hunting, etc.
person4 hands out CIBIB pins to everyone disrupting things and chasing dev1 off.