A Jacksie is a person who can manoeuvre their penis down between their legs, curling it around and inserting it into their own anus. Essentially it's the act of fucking yourself
"oh man, did you see Phil put his dick in his own ass the other day?!"
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."