Green’s Dictionary of Slang

(US) nonsense word, used as synon for adjust, finagle, manipulate.

1947		Sat. Eve. Post 13 Dec. 72/2: Mamoulian walked over and said severely to Rooney, "I don't think we ought to frammis on the portisan between takes or even ouvrez la fenêtre.
1949		Collier’s 9 Jan. 39/1: ‘[S]suppose he’s standing there, and the other fellow should frammis it in the deviating circumstances, if you know what I mean, does that or doesn’t it?’.