When used as a verb, it means 'imagine.' Used in this context by granola crunchers (who are notorious for using lots of jargon to disguise their lack of confidence in themselves and/or what they say) and by those who feel silly admitting that they can still imagine.

Something kids work too hard on to establish and maintain for themselves. Image-seekers are often quick to label themselves and don't give a caca bar about anything beyond their own skin... Will go into super-bitch mode if contradicted.

The overall outlook of a place, person, or thing.