overhalling
To wear a button shirt with the top three or more buttons opened, and having no under/t-shirt underneath to cover the chest area. In other words, showing waay too much.
Jordan was overhalling with that fancy dress shirt he has on earlier.
overhall
A complete remodeling of da corridor dat runs along beside da doors to da bedrooms in your home.
Ordinary houses tend to be laid out in a somewhat square or broad-rectangular configuration, and so they usually have one or more access-corridors of just fairly-short duration each. Mobile homes, however, are typically long skinny things with all of da rooms' access-doors arranged in a single line, and so performing an overhall in DAT type of structure would be quite a "lengthy" undertaking!