Green’s Dictionary of Slang

canoe n.2

[supposed physical resemblance]

1. (US) a large car.

[US]A.J. Pollock Und. Speaks n.p.: Hot duck in a canoe, a detective in an auto.
[US]Oui Mar. 110: Used canoes [...] Pimpmobiles for sale! [HDAS].
[US] in D.E. Miller Bk of Jargon 47: boat: Also ark, canoe, sled.

2. the vagina.

[US]Maledicta VI:1+2 (Summer/Winter) 131: Cabbage, cake, canoe, cock, poontang from putain.

In compounds

canoe inspection (n.)

(US) a medical inspection of the female genitals.

[US]Trimble 5000 Adult Sex Words and Phrases 37: canoe inspection (Vulg.) Inspection of service-women’s Genitalia for possible V.D. infection by medical officers or medics. The female version of Short Arm Inspection — canoe inspector (Gynecologist).
[US]R.A. Wilson Playboy’s Bk of Forbidden Words 60: Canoe Inspection. Inspection of prostitutes’ genitalia for venereal disease.
canoe maker (n.) [a body emptied of its organs supposedly resembled a canoe]

(US) a coroner, a medical examiner.

[US]J. Wambaugh New Centurions 61: ‘[T]he old canoe maker at the autopsy today claimed that she punctured the aorta with a three and a half inch blade!’.

SE in slang uses

In phrases

[‘it’s fucking near water’] love in a canoe (coffee) (n.)

weak, tasteless coffee.

[UK]T. Pratchett Guards! Guards! (1990) 200: This is love-in-a-canoe coffee if ever I’ve tasted it. The other stuff had flavour.
D. Sedaris Dress Your Family in Corduroy and Denim n.p.: He took a sip of my father’s weak coffee and spit it back into the mug. ‘This shit’s like making love in a canoe.’ ‘Excuse me?’ ‘It’s fucking near water’.
[UK]Guardian CiF 28 May 🌐 Best way to go, always avoid ‘love in a canoe’ coffee.
X 5 July 🌐 Nobody’s drunk after a trio of American ‘making love in a canoe’ beers'* *‘f*ing close to water’.