Cooincidentally... my frist time was today!
The pharmacy is a bit of a walk from my house... Fortunately, that gave me about 20 or 30 minutes to calm down from the nervous state I was in when I stepped through my front door.
The moment the store's automatic sliding doors slid open, I felt like I had a purpose that wasn't anything to be ashamed about (although... I must admit I did have a ready-made story about the diapers being for a 'grandpa' or 'grandma' who would be over for the Easter holidays.)
I found the area of the store with the adult diapers... took about 5 minutes to decide which brand I should get ("Depends", in case you're curious...) picked it up from the shelf but found that there wasn't any price information anywhere on it on the shelf. Nervously, I took it to the checkout and tried to look cool with the big obvious bundle under my arm.
This was probably the worst bit because the gentleman in the line ahead of me was grilling the pharmacist on how much his private drug plan & the Canadian public health plan would cover his medication expenses. His interrogation of the poor pharmacist went on for at least 10 minutes (with me pacing in the background... trying not to look too uneasy.)
Eventually, the guy was done and I found the price. It was very reasonable so I bought it on the spot & made a quick bee-line back to those automatic doors.