An actor can't get work because he always forgets his lines, but he eventually finds a theatre where they give him a chance to shine.
The director says, "This part has only one line. You walk on stage with a rose, hold it to your nose with just one finger and thumb, sniff, and say, 'Ah, the sweet aroma of my mistress'."
The big night arrives, the curtain goes up and the actor walks onto the stage and delivers the line.
The theatre erupts with laughter and the director cries, "You bloody fool! You've ruined me!"
The actor says, "I didn't forget my line, did I?"
"No," the director says, "You forgot the rose!!!!"