A phrase borrowed from instructions commonly found on bottles of shampoo and hair conditioner. It is used to indicate that a certain pattern of behaviour will, inevitably, occur again - usually despite furious claims that it won't.
This phrase is particularly applicable to people in troubled relationships.
Once again, after three months of dating, Noodle has frightened off her latest man. Now she's dating someone else. Rinse, repeat.
A public relations or marketing person who gushes enthusiastically about a concept or story idea to a journalist, but understands very little about the actual subject matter - much like a spaniel can be *really* excited about fetching that stick, but doesn't know why.
Rebecca called me today and blabbed on about some garbage concept her client's firm is working on. She's such a spaniel.