... Might explain the smirk every time you go to the GP when she looks in the computer and sees you ordered another 100 viagra pills.
Before the Medical Centre where I'm registered moved a couple of years ago to computerised repeat prescriptions, I used to get not so much of a smirk, more a grin that I read as, "Good on yer' from the Receptionists that this patient in his 70s, with his gammy leg and walking stick, was calling to collect a script for 4xTadalafil every four weeks.
I always returned the smile, of course! As I do each time I collect the made-up script from the really quite GILFy - I am 74, after all! - assistant at the pharmacy in the Asda branch where I do my Big Shop.