An-Udder Gag

An out-of-control airplane takes aim at a cow in Plane Crazy (1928).

Comedy ensues as we get a perspective of the propeller-driven plane going under the cow’s udder.

Next comes the Mickey-gets-a-face-full-of-milk gag. This was used in Steamboat Willie the same year. Did it appear in one of the Disney Oswald cartoons?

Finally, Mickey gets back on the plane by pushing in the cow’s tail, and lengthening its neck in the process.

Ub Iwerks animated this short with a bit of assistance from Ben Clopton, according to Mike Barrier's book The Animated Man.