Weather vaning is when a ship/boat/wings of a windmill/aircraft is allowed to spin in the direction of wind freely. Its basically allowed so that no damage/breakage to the equipement/machinery happens due to the force of the moving wind.
Janitor: Do you like vanning?
Molly Clock: I don't know what that is.
Janitor: Sort of like taking a long drive in a car... except in a van.
Molly Clock: ...still not getting it
A member of a social network group or forum that continuously posts incredibly shitty music, while commenting to themselves alone. Threads reaching upwards from 5 to 65 comments per post from op to bottom.
All night last night, Jeff was vancing a thread with Nickleback videos. smdh.
The act of dancing while one sobs and cries profusely, usually while one's life is in great danger, yet still totally rocking it.
Person X is being threatened and forced to vance by a chainsaw-wielding monster. Person X starts vancing, absolutely going to town while crying their eyes out in the fear of death.