I have two indentations on the bottom of my shaft, like if you hold out your index finger and fold it inward, you can see two creases form on the bottom of your finger. When I get hard from arousal those two indentations are clearly visible.
But when I wake up and examine my morning wood the shaft looks almost completely normal and the indentations aren't really visible at all. Why is this?
Maybe it is just a stronger erection?
Yes, because it's a stronger erection.