Idiom Definition:
"to get on your soapbox"
to give a speech about something you feel strongly about, often for a long period of time and on a subject that other people may not be interested in.
Synonyms:
convince, declare, decry, discourse, dissertation, espouse, harangue, lecture, orate, oration, persuade, pitch, proclaim, proselytize, rail, rant, sermon, speak, spiel, spout, sway, talk
This person has literally
gotten on their soapbox. - - - - ->