Peanut butter is gooey goodness with jelly on white bread, but less appealing when a brown smear ends up decorating your coat sleeve. Damage control consists of scraping the solid peanut goo off the fabric first. If the stain isn't too extensive, try scrubbing it gently with dishwashing liquid and then rinsing it in hot water (as hot as the fabric will tolerate). When dealing with large or set in peanut butter stains, use dry cleaning solvent or a commercial spot remover. Test an inconspicuous section of the material first, and follow the manufacturer's directions.