The panning effect reminds me of the chopper in Metallica’s One (definitely want headphones to “feel” the effect)
And this video may be a good resource for what you’re asking for.
This isn’t my particular skill/talent but I found some info that I hope can help. But do take it with a huge grain of salt and definitely look into what others say with the relevant experience.
The blood vessels can be permanently damaged from an erection that long so it tracks.
This is why the Viagra commercials have that “if you have an erection lasting longer than 4 hours” bit. It is a serious issue that if not addressed can lead to permanent damage that can make it impossible to have an erection.