Up and Down

[LiNuX]

What goes up, but at the same time goes down, up to the sky and down to the ground, my present tense and my past tense too, lets go for a ride just me and you...what am i?

[Twigz]

Uhhhhhhhhhh....Dr. Seuss?? ;D

[diablo]

lol dr. seuss....well i say an elevator, dont know why, maybe 2 elevators at the same time? ;D

[LiNuX]

The answer is a see-saw or sea-saw, however u spell it, it goes up and down at the same time, and it takes at least 2 people to ride it and its present tense is its past tense meaning that when its down, it was down before, and blah blah blah