[minnesota_bound]

I think that was the er... waste that was disposed of floating around the ship. There was a report I read once by an engineer named Howard Wolowitz about this.
Here are some test video and explanation of the problem.

Doesn’t hit the fan
https://www.youtube.com/watch?v=zBZrXuHmrtM

Not enough breadcrumbs
https://www.youtube.com/watch?v=aXJgXPxTzRg

[Elsie]

I think that was the er... waste that was disposed of floating around the ship.

I doubt it.

DEPENDS would have made a LOT more sense and been a LOT cheaper to implement; too.