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You're a Sap, Mr. Jap (1942)

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Ratings: 5.7/10 from 169 users  
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Popeye takes on the Japanese Navy single-handedly.



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Title: You're a Sap, Mr. Jap (1942)

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Uncredited cast:
Jack Mercer ...
Popeye / Japanese Sailors (voice) (uncredited)


Popeye's sailing out in the Pacific, spoiling for a fight with the Japanese. He comes across what looks a Japanese fishing boat, but, just before Popeye lets loose with the old fists, the Japs offer him a peace treaty. Popeye's all for peace, but are the Japanese men of their word? Written by Jonathan D. H. Parshall <>

Plot Summary | Add Synopsis


Approved | See all certifications »




Release Date:

7 August 1942 (USA)  »

Company Credits

Production Co:

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Technical Specs


Sound Mix:

(Western Electric Noiseless Recording)
See  »

Did You Know?


The title song was reportedly written and copyrighted three hours before Congress declared war on Japan. See more »


You're a Sap, Mister Jap
Words and Music by James Cavanaugh, John Redmond and Nat Simon
Performed by Jack Mercer and chorus at the beginning
See more »

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User Reviews

A Lot Of Good Artwork & Sight Gags In Here
14 January 2009 | by (United States) – See all my reviews

This World War II Popeye cartoon had some very good sight gags in it, and its decidedly above-average for its genre. It was nicely drawn, too, with some great angles, good detail and....well, lots of interesting sights.

What it amounts to is Popeye out at sea in his little boat and accidentally running into a small Japanese boat, with two guys on it. (Incidentally, why were the "Japs" always pictured with big, round glasses and bucked teeth?).

Anyway, these harmless-looking Japanese sailors want Popeye to sign a peace treaty. Oh, boy, thinks the gullible Popeye, "wait until the Admiral sees this!" In one of those great artwork scenes I was alluding to above, we slowly see how that little Japanese ship is really a big destroyer.....and Popeye is in, water! "Why, you double-crossing Ja-pansies!," yells our Sailor Man.

How he gets out of the situation is fun to watch.

5 of 6 people found this review helpful.  Was this review helpful to you?

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