Usually if I am wearing soft fabric pants with elastic
waistbands I will stick my dick at the 12 o'clock angle upwards
flat on my tummy against the waistband and then let it down again
once it goes soft.
If my pants are hard materials like jeans etc, then all is fine
since it just looks like I have a big dick so I do nothing and
leave my dick at the 6 o'clock angle.
Or at the very least I will hunch my body slightly forward
to disguise the erection angle and then stand normally again once
it goes soft.