Green’s Dictionary of Slang

mahula n.

also mahoula
[mahula adj.]

(US) nonsense.

[US](con. 1900s–10s) Dos Passos 42nd Parallel in USA (1966) 334: Docks said that was all mahoula.
[US]Duff & Sutherland I’ve Got Your Number [film script] I still think it’s a lot of mahula.