Time Warp

What will happen if I can’t come back?
What if I should fall between the cracks?
Will I go back and forth down on-line?
Wherever! It’s a question of time
Watching my sand glass
I count to a thousand
I flip it over
A lifetime in my hand
I set the counter
And switch on the power
Transform my matter
Am I gone forever?
Am I tomorrow or yesterday?
Another second’s just passed away
Upcoming present and future past
Am I the first? Could be the last
Over and under