Jack's Naughtiness Unbound

A five book box set where naughty lads and men get up to all sorts of mischief, and do so without the need for any sort of physical bonds. Including:
Trucker Bugger, where trucker Jake is up to his old naughty tricks
Private Business, where two naughty builders have a devious plan
Preparing the Way, where Greek customs officers are extremely naughty, but no one is complaining
Private Education, where a naughty voyeur is taught a lesson, and then a few things more
Through the Keyhole - four short stories with naughty content and twist at the end