Into every house 
Must 
A door open
And then,
Behind you,
Will
It shut.

Come & go
As you please.
It will be
The same
Before
&
Aft

Unless

U R one
of those
Folk

Who can enter
A
Revolving Door
Behind
Someone
&
Still
Come out
First.

~ D.E. BA U.E

(image) https://i.pinimg.com/736x/21/d2/36/21d2369c121e3cffc74e37f7c8ee4496--oak-doors-entry-doors.jpg