madder than a woodheap, adj. — Green’s Dictionary of Slang

madder than a woodheap adj.

also madder than a wet hen/owl, ...seven boiled owls, ...thunder, ...nine hundred dollars

very angry.

1938		W. Smitter F.O.B. Detroit 26: Russ was madder than seven boiled owls. He took it out on the ingots. [Ibid.] 90: Johnson was madder than a wet owl.
1943		W. Guthrie Bound for Glory (1969) 19: Rougher than a cob. Wilder than a woodchuck [...] Madder than nine hundred dollars.
1959		D. Niland Big Smoke 27: He had poor Tommy madder than a woodheap.
1974		(con. 1940s) E. Thompson Tattoo (1977) 29: It just makes me madder than thunder.