Linking up with someone you like and feel comfortable with. Usually at their place of residence for some drinks, smoke up, music and sex or sexual activities.
"Hey Mara, just finished from work. you looking to catch a vibe tonight?"
To "catch a vibe" is when someone is invited by a potential partner to hang out and feel how the other is feeling after deep conversation and sometimes after substance use.
When a combination of environment, headspace, beverage and/or indulgence of choice hit in a way that produces a unique and profound mental-state.
"My dude, if you really want to catch a vibe just go out into the woods and smoke a big fat gorilla finger blunt"
"This Lo-Fi playlist/dreary fall weather combination has me about to catch a vibe"