Being in an upright position but so tired that you fall in and out of sleep, causing your head to bob back and forth making you look like you are on an off-road vechicle of some sorts.
Man, we camped out for the Xbox 360 for so long, I started 4 Wheelin.
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."