I don't know how people imagine viagra working - it's not like you take a pill, you continue browsing the internet, reading news, and suddenly, a boner lifts your desk.
Was news to me to read in a sibling that it also requires mental stimulation. I thought it was purely a physical inducement by the drug, as many drugs for other purposes induce a physical response without requiring mental effort.
>it's not like you take a pill, you continue browsing the internet, reading news, and suddenly, a boner lifts your desk.
Aside from the lifting the desk part, that's exactly how I imagine it working - and how it should work. You mean it also requires special sexual arousal? Well, even that it shouldn't be that difficult.
Was news to me to read in a sibling that it also requires mental stimulation. I thought it was purely a physical inducement by the drug, as many drugs for other purposes induce a physical response without requiring mental effort.