Green’s Dictionary of Slang

noodle n.2

1. [1970s+] (US black) the penis [its supposed resemblance, when flaccid, to a cooked noodle].

2. [2000s] (US) a Chinese or East Asian person.

In compounds

noodle benders (n.)

[2010s] (Aus.) short tight male bathing trunks.

SE in slang uses

In compounds

noodle dick (n.) [dick n.1 (5)]

[1990s+] (US) a general term of abuse; the over-riding image is of impotence, i.e. a penis limp as a cooked noodle.

noodle soup (n.)

[1920s] (US Und.) nonsense.

In phrases

noodle soup drinker (n.) [racial stereotyping]

[1900s–30s] (US) a Jew.