My mind is the thirteen level floor
Can’t find it

from Crooked I (Ft. Horseshoe G.A.N.G & Iceman) – Team COB Lyrics on Rap Genius

Meaning

Since the number 13 is very unlucky, most buildings don’t have a 13th floor. His mind is the 13th floor, which doesn’t exist. That’s what he means by “Can’t find it”

13th Floor Wikipedia

Notice that there’s no 13th floor button because there is no 13th floor. Although technically the 14th floor is the 13th floor.

To help improve the meaning of these lyrics, visit “Team COB” by Crooked I (Ft. Horseshoe G.A.N.G & Iceman) Lyrics and leave a comment on the lyrics box