You need a prescription
And if your d need help from viagra. You got bigger problems to worry about, like heart disease, high blood pressure or diabetic neuropathy affecting the nerves to your d. Your d is part of the whole system, your d got problem means it is knock on effect from other parts.

If he go Cheong d bo hard, waste money only.
If d the gf, I kesian the gf.
For his sake, better spend the viagra money to do annual checkup.
If his d no issue, take viagra will give no benefit. 2" is 2", 11 mins is 11 mins.

Normal la
If u no turned on by that chick, take viagra also no use.

The same way you approach a girl la. Politely and respectfully.

Hey, how u doin? How much you charge for that Viagra?

Lel