A poorly conceived idea of seemingly insurmountable proportion. Originating from software development process, a cliffberg is the inevitable result of starting off with a bad idea and sticking with it doggedly until the bitter end, rather than stopping and re-evaluating because the process has become more important than the product.
I think that's a bad idea and it's just the tip of the cliffberg.
"I was watching a video about blue LEDs when the video ended just as the inventor was talking about inventing the blue LED! 1.5 minutes of my life wasted!"
"It's a cliffhanger."
"A cliffhanger, huh? You know what's also a cliffhanger? The Sopranos ending with a cut to black! This ain't a cliffhanger, it's a cliffbaiter!"