ride (one's) hobby-horse

To frequently or incessantly talk or complain about a subject, topic, or issue in which one is excessively interested. Ah, here we go again. Once grandpa starts riding his hobby-horse about the government, there's no stopping him!

Common Names:

Name	Pronounced	Usage
Chestislav	-	Medieval Slavic
Osborne	AHZ-born	English
Alexandra	al-əg-ZAN-drə (English), ah-lek-SAHN-drah (German, Romanian, Spanish, Italian), ah-lək-SAHN-drah (Dutch), ə-lə-SHAN-drə (Portuguese), ə-lə-SHAN-drə (Brazilian Portuguese)	English, German, Dutch, French, Swedish, Norwegian, Danish, Icelandic, Greek, Portuguese, Romanian,
Aurora	[ɔ:'rɔ:rə]
SauliĀ	-	Baltic Mythology (Hypothetical)
NadÈGe	-	French