Racist?

I remember watching this cartoon back in the day and there was a scene where Bessie the cow is producing milk for the first time in awhile and delivering it to Porky like they were newborn babies. The first four or so were plain white milk but then a chocolate milk comes out and Porky and Bessie freak out. Porky turns his head and starts sweating and whistling while Bessie takes care of it and delivers another white milk. Crazy...