"While I doubt you are telling me the whole truth, you never seem to do, I image there is some slither of truth to this. Considering both you and Sarah can manipulative minds, and normally aren't all that secretive about it, I have no reason to believe that this is what this does. Or prehaps we found the first thing in this hotel dear old Manager doesn't know everything about." He said, immediately teleporting out. 

He could try to conceive Nixon to take the shot, but that would be to much work and he was never good at any conceiving that didn't involve some sort of bribery, black-mail, torture, etc. He teleported right behind Nixon and quickly injected him in the arm and pushed the needle down as far he could. When the needle was fully in and all the "medicine" was in his body, though he quickly mused to wonder how injections work on bloodless creature, he quickly blinked backwards and conjured a note where he was that read, "I had to inject you with your medicine because the Manager asked, and this was the quickest way." And at the end of the note, there was in big capital letters, "BYE". As he quickly teleported away. All of this occurring in a matter of seconds. 

Having no where else to go, he went back to the Manager's office, "Well, I injected him with the stuff. Now, I am going to into this corner and going to wait a while. No reason."