The over Under

There's nothing to see
 There's no way of knowing
 If we're coming or going
 There's no way to know
 We walk through the door
 Are we in, are we out now?
 Do we twist, do we shout, now?
 There's no way to know
 Your guess, I guess
 Is as good as mine
 We could pool together
 And be half right all of the time
 My guess, I guess
 It's all, it's all the same to me
 I'll just throw this out there
 If you might care to tag along
 Now that I'm no longer chasing certainty
 What's the over
 What's the over under?
 We've nowhere to be
 We need to get going
 The old ways of knowing
 There's no way to know
 We drive through the night
 To be there in the morning
 To be where in the morning?
 There's no need to know
 And Mama Bear says
 "Papa Bear,
 Are you lying there
 All afternoon?"
 Your guess, I guess
 Is as good as mine
 We could pool together
 And be half right all of the time
 My guess, I guess
 It's all, it's all the same to me
 I'll just throw this out there
 If you might care to tag along
 What's the over
 What's the over under?