Green’s Dictionary of Slang

1. worn out.

1922

Joyce Ulysses 358: Blown in from the bay [...] Always at home at dinnertime. Looks mangled out: had a good tuck in.

2. (US) hurt, injured.

c.1930

(ref. to 1868) N. Kimball Amer. Madam (1981) 92: It was the last resort of a cornered whore about to be mangled or badly hurt by a john.

3. (US campus) dishevelled, unkempt.

1989

P. Munro Sl. U.

4. (Irish) drunk.

2001		G. Coughlan Everyday Eng. and Sl. 🌐 Mangled (a): drunk.
2003		Eble Campus Sl. Nov.