While there were comedies about sex before Alvin, it can claim to be the first explicit Australian sex comedy, or at least the most explicit, since Stork was merely a warm up, and The Adventures of Barry Mckenzie as much concerned with beer and chunder as it was with sex and penis flashing with Alvin providing glimpses of a limp penis, while Bazza failed to deliver.
Burstall also claims to have introduced Alvin's virginal girlfriend, played by Elli Maclure: I introduced her as I felt the audience needed a point of comparison with which to identify.