Shane took his maid training very seriously. Next to the naughty stuff he was also expected to behave as a maid. He took some extra training from the mouse maid of his best friend, who fooled Shane into thinking he was a girl when they first met. With his help Shane learned how to posture himself so he'd make a believeable maid.
And with this final setup and training, the preparations for father's day were complete. All that was left, was the day itself.