Green’s Dictionary of Slang

Polish adj.

[racial stereotyping]

used in combs. as an indicator of peasant stupidity and poor hygiene .

In compounds

Polish airlines (n.)

(gay) walking.

[US] (ref. to late 1960s) B. Rodgers Queens’ Vernacular 212: When walking, a gay takes the Jewish [Italian, Polish, etc depending on personal bias] airlines (kwn SF, late ’60s).
[US]Maledicta IX 59: Polish airlines n [R] Walking; homosexual slang.
Polish shower (n.) (also English shower)

a cursory wash or the application of deodorant to unwashed armpits.

M. Stone Long Reach 104: He l[...] didn’t have time to clean up again. Instead, he opted for what he referred to as a Polish shower: warm water on the face and a couple blasts under each arm with Right Guard. 🌐 Those of you in fraternities know what a Polish Shower is. When you wake up for a 10:00 class at 9:55, you wet your hands and run them through your hair, put on a hat, spray some cologne, and dash out the door. 🌐 I’ve noticed that budget travelers love to put on deodorant without taking a shower. This is sometimes referred to as an ‘English shower’ or a ‘Polish shower.’ Personally, I do not condone this practice. I would rather smell like the ass of a yak then put deodorant on a greasy, sweaty armpit.
A. Vera Find It [ebook] Did he take a polish shower with body-spray because he thought it would diffuse throughout the earth’s atmosphere.