LORELAI: My clothes were at the cleaners, and I had the fuzzy clock and it didn’t purr on time.
LUKE: It didn’t purr?
LORELAI: It’s fuzzy. It purrs.
We learn during the show that Lorelai has a penchant for novelty clocks, more than one of which make animal sounds or resemble animals. They not infrequently seem to be of poor quality and let her down, as the fuzzy purring clock did this time.