They kept the whisker out of the way of the mouth and eyes, (except for the side-view above). The Bow-Tie is always front view messing with no collar. If there was a collar it's hidden. He never is seen from the back like on the Simpsons. I made me notice how much I mess around with suspenders and fabric on the hat and on the pants . . etc. . . .
. . . these drawings all have ONLY three lines to describe the body!
This wobbly mouthed character was a perfect study to tone down Laughing Larry's wobble mouth. Notice when he's laughing the wobble shape does not get even more wobbly. On other hand, it depends on the voice and how it works with the acting.
Other characters with this "wobbly mouth" Wally Gator, Snaggle Puss and Snookles who's on the post below.