Green’s Dictionary of Slang

screamer n.

1. in fig. uses, implying something or someone exceptional or egregious.

(a) [early 19C+] (orig. US) anything or anyone exceptional, in size, attractiveness, wit etc.

(b) [mid-19C–1910s] a serious and unpleasant situation.

(c) [mid-19C–1960s] a thrilling or funny story, a ‘screaming’ farce.

(d) [1970s] (US campus) anything exceptionally challenging, difficult, esp. work.

(e) [1980s+] something horrifying.

2. a person who lit. or fig. ‘screams’.

(a) [mid-19C] a ballad singer.

(b) [mid–late 19C] (orig. US) a teller of exaggerated or very funny stories.

(c) [1920s+] an informer [scream v. (1)].

(d) [1940s+] (also screamer and creamer) a woman who screams or otherwise makes a good deal of noise during intercourse [cream v. (1c)].

(e) [1960s] (US campus) a practical joker, a prankster.

(f) [1960s+] (orig. gay) a flagrant homosexual.

3. an object which lit. or fig. ‘screams’.

(a) [1900s] (Aus.) a pornographic postcard.

(b) [20C+] (US) a sensational newspaper headline or story.

(c) [1900s] a sensational or propagandist piece of writing.

(d) [1930s–60s] (US Und.) an arrest warrant.

(e) [1990s+] (US black) a siren, esp. on a police car.

SE in slang uses

In phrases

two-pot screamer (n.) (also one-pot screamer, two-middy screamer, two-pint screamer, two-schooner screamer) [1940s+] (Aus.)

1. one who cannot hold their liquor without becoming obstreperously drunk; one- or two-pot refer to the need for only one or two drinks before they lose all control; middy, pint and schooner refer to glass sizes and denote the (small) amount of alcohol required for this effect.

2. in fig. use, one who panics easily.