"I loved working with Jason, of course," said Shaw, who plays the legally blind sister Rita LaPorta to optometrist Vinnie DiRuzzio (Alexander). "We actually worked with the same teacher…so we kind of had met, but we had never worked together. He's hilarious, but he's so savvy… And, it was fun!"

In the film, Rita goes to her brother for help when she is caught in a jam — she's been having an affair and (with the help of her lover) embezzled $6 million from her husband's casino. Now, after her lover has died, the embezzlement is somewhere in Monte Carlo with a shoe salesman, and she must reclaim it.

"I love to go full out and then bring [it] back, and I think that he does, too," Shaw said of the dynamic between her and Alexander, "So, we just did improvs on brother-sister stuff. I was doing a lot of 'titty-twisting' on him — a lot of which didn't get in the film, but a lot did — and [we would] just really drive each other crazy. We did pretty indecent things! They've had a history, obviously, long before they meet in this film, and that history has to be implicit by the time you get to their first scene and my song, otherwise it doesn't work."

Shaw has played the role before and sees Rita as a "huge, huge, huge, untamed, uncontained energy."

Check out her and Alexander in their first scene and song, "Rita's Confession," below.

"Lucky Stiff" is released in select theatres and on demand July 24 and is produced by Victor Syrmis and J. Todd Harris.