Tennant is best known for his portrayal of the title character in TV's "Doctor Who." He finished taping his role in that series last year and has since been working on other projects.
In an interview with Absolute Radio, he said: "There was a whole sequence (for 'Single Father') with them going: 'No, sorry, we can't see your ass. Sorry, go again. We've got to be able to see his ass. Come on, once more,'" The Daily Telegraph reported.
Tennant said he doesn't know if his efforts ultimately paid off.
"I don't think it's made the final cut," he said.