Good Luck on the Interview

Late one night, smash one of your friends car window and place in the front seat a well dressed mannequin with a note on his lap that reads

"Good Luck on the Interview."

Your friend will be so confused, mainly because he does not even have an interview. Express how weird you think this whole thing is and tell him to call the cops.

Do it again a month later.
He will not know why this is happening and his confusion will be something you can laugh at for a long time.