Animation historian Jerry Beck reported that late in the cartoon, Bosko says something along the lines of "The dirty fuck," but is unsure whether it was the actual line or a recording error.
Vitaphone production reel #5955.
The final Bosko cartoon to be produced by Warner Bros. Cartoons.
The final Warner Bros. cartoon to be co-produced by Hugh Harman and Rudolf Ising for Warner Bros. Cartoons, and the final WB short to be scored by Frank Marsales.
Using subtitles on the dvd reveals that Bosko doesn't use the 'F' word but instead says 'You Dirty Fox'