a device to walk trhough walls.

The correct singular of deer.

If goose is the singular of geese, and tooth is the singular of teeth, door should be therefore be the singular of deer

What you lock to prevent people from knowing you're looking up porn

triple G - Girly Gayass Guy
Guy who acts like a girl, talks like a bitch, looks like a pussy

To hit or strike someone with a door, usually with agression or in self defense.

a door...hmm where do i start?
a door is something that you open or slide in order to get into a room or out of a room doors usually have knobs in which you twist to open the door

its a banana