here's something that's not squat..

from squat, U.S. slang for not anything (Orig. as second element of phr. doodly-squat):
1967 WENTWORTH & FLEXNER Dict. Amer. Slang Suppl. 705/2 Squat,..= zot. Ibid. 712/2 Zot,.. a grade or a score of zero.

[source: OED2]

also in the Partridge Dictionary of Slang link
(note that Johnny Hart is given credit for the verb form - see cartoon above)