(the summary line will make sense once you've seen this)
Short, simple, and to the point, this short film features very good animation for its time and has excellent comic timing. The two "leads", a blue mosquito and a bubble gum-munching loner, have a very comedic, very French design and the film is well edited and "shot". Giving away anything in terms of plot would consequently give away the punchline, so I'll just advice you to see this for yourself (it can currently be found on Youtube).
It may be short and the animation may not have the glossy sheen of perfection of modern day, soulless Pixar films, but it is infinitely more charming. It's a shame no one seems to have heard of this because it really is very good. See it.