"Zi" means adulthood and respect. "Sum" is summation which is adding a sequence<an ordered list of objects. "Bo" means to live. Zisumbo means a person(or people) that come into your life that makes it better(or in order). This person(or people) builds-up your maturity and respect for others.This person is a "helper".
My friends and family are really zisumbo and that's the reason why I love my life so much.
another term for a station wagon, mini-van, or any other kind of vehicle that is targeted at the "family" demographic(also M.A.V.)
"Tactical advantages aside, the M.A.V. is top of the line for the holy warrior troop transport manufactured by the Church of Latter Day Saints Military Industrial Complex. Also great for family trips...to heathen lands."
12 step recovery jargon referring to someone new who talks about how great life is, now that they'resober. Usually meaning that the person is out of touch with reality.
The new guy seems pretty happy for a dude who has no job, no money and no family. He must be on a pink cloud.