Lol.I think "ceiling" refers to average number wins/season.
No,
VH. In sports, and many other areas of life, a “ceiling” and a “floor,” or “base” are used to describe the heights beyond which one cannot rise, and the depth beyond which one cannot fall.
Hence posts describe Stoops’ floor as Brooks’ ceiling, and note the irony of the excitement for Brooks 8-5 seasons, and the angst for similar seasons under Stoops.
I hope this post has lifted the ceiling on your understanding of the urban dictionary.