as long as my head wasn't in it, im good to go.
1-down 2-stairs.
A cow can climb up stairs but not down.
"Downstairs" is typically written as one word when referring to the lower floor of a building.
I have personally watched my cow climb down a set of stairs. The disclaimer of cows not being able to climb down stairs probably refers to very narrow stairs.
he fell down the stairs he fell down the stairs
The basement or the root cellar are often found when you go down stairs.
Stairs go up and come down as well.
One little push and the Slinky will flip down the stairs.
the stairs
The opposite of up the stairs is down the stairs, as the opposite of upstairs is downstairs.
Stairs, you go up you go down but the stairs never move.
The answer to this riddle is "a staircase". Of course the staircase does not actually move up and down, but when you refer to a staircase directionally, you are either going "up the stairs" or "down the stairs". Its function in and of itself is to "go" up and down.