For no reason at all, please give me your favourite cow-related figures of speech! (Stuff like "No use crying over spilled milk" or "until the cows come home", puns extremely welcome)
@sundogplanets "Je moet geen oude koeien uit de sloot halen," Rough translation: don't rescue an old cow from a ditch.
Basically it means that you should not bring up old grievances in current discussions.