get on (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 gets on his hobby-horse about the government, there's no stopping him!

Common Names:

Name	Pronounced	Usage
Vilko	-	Slovene, Croatian
Mitxel	-	Basque
Hyde	[haid]
Jaala	-	Biblical
Lawrence	['lɔrəns]
Hassan	-	Arabic, Persian, Urdu