mullypuff, n. — Green’s Dictionary of Slang

mullypuff n.

also mullipuff

[dial. mullipuff, the fungus Lycoperdon Bovista, a puff-ball, note F&H suggest an alternative meaning, ‘a gambler’s decoy’ but DSUE dismisses this as an error]

a weakling, used as a general term of contempt.

1629		J. Shirley Wedding IV iii: Theu mully-puffe, were it not justice to kick thy guts out?
1653		Mercurius Democritus 19-26 Oct. 620: A Dutch Mullypuff, being a Jewish Abram, [...] having a Bitch dying, whom he dearly loved, made a great buriall for her.
1769		T. Chatterton ‘To Miss Lydia C---n’ in Works (1803) 155: A rev’rend Cully-mully Puff, / May call this Letter odious stuff. [Ibid.] ‘Extract from Kew Gardens’ 200: R-- , a reverend Cully-Mully Puff, / Who thinks all sermons but his own are stuff.