You are not entirely awake or there is a cute female nearby.
standing up with your back straight.
A block of wood.
straight up
Yes it does. Experiment by standing upright with your feet together looking straight in front of you keep standing up straight then note how much harder it is with your eyes closed. Then do the same again standing on only one leg.
No because slouching can mess up your composure
it is almost standing straight up 2 degrres.
To keep you standing up straight and to protect your spinal cord.
If there are no angles, all you have is a 'straight side'. There is a plane and no shape. Maybe you are thinking that straight means standing up straight. You might then be thinking of an upright tube.
Standing straight up in the drivers seat.
BEHIND THE ASHTRAY IN THE FUSEBOX, A WHITE RELAY STANDING STRAIGHT UP.
pain shot up my private
When standing on the moon, "up" means straight over head with body erect and straight, the same as Earth because of the gravity which is about 1/7th of Earth's.