Don't bother trying to cheer up your weepy poodle. Her tears don't mean she's sad -- they're the sign of a physical problem that often presents in her breed. The only real consequence is cosmetic, though, and while surgery can reverse it, daily grooming is a much more affordable solution.
Consult your vet to rule out any potentially dangerous causes for her weepy eyes. While weepy eyes and the stained fur they create are exceptionally common in poodles, it could always indicate a more serious condition, so get her checked out before you start a simple grooming regimen.
Wipe the affected area daily with doggy eye wipes or baby wipes. This not only keeps the area clean, but can prevent eye infections that may result from weepy eye.
Trim the stained fur around her eyes to minimize the amount of staining. Use a small pair of scissors, like cuticle scissors, to minimize the risk of hurting your dog.
Mix a hydrogen peroxide and water solution, using one part peroxide for every 10 parts water. Dip a clean towel in the solution, then gently wash the stained fur around your poodle's eyes with the towel. Be careful not to get the solution in her eyes.