What does vent slang mean?
When you vent, you let something out, whether it’s hot air or your feelings. If you vent your feelings, you let out a strong and sometimes angry emotion and just say what you think.
What does it mean to vent on someone?
vent on (someone or something)
To subject someone or something else, especially an innocent party, to one’s negative emotions or reaction. A noun or pronoun can be used between “vent” and “on” to specify the negative emotion.
