This was attempted by by coworker. He actually pulled it off the first time but now I'm on to him and it hasn't happened again. He invited me to have dinner with him so we could talk about blah-blah and during the meal he asked the waiter to take a picture of the two of us. I found that a little odd. He hadn't eaten very much and he casually mentioned and bragged that he was saving space for a second dinner and presumably "dessert" with his lovebird the same evening. I knew he was going to send his wife the picture of him and me as an alibi later that night. What a dog. I later told him I was not ever going to be his alibi again.As long as they aren't using you for a cover up story, best to stay out of it.