At my institution there is a sys admin that belongs to an entirely different department. They have their own systems on their own network, separated from ours. I do not care, nor do I mind at all, but this is the second time I've had to put their admin in his place.

The first instance was when we had a security firm gauge our systems for vulnerabilities etc. The one that they have was fine, but required some additional configurations on their Tomcat servers. The "sys-admin" contacted I.T (my department) in order to request assistance, the net manager was the one he contacted, and he told the dude that he is not familiar with the Tomcat environment that they have, but that I, the dev manager, would possibly give him some pointers. The net manager is my friend, and he knows how much of a dickhead I am, so he was careful in what he told him. So the dude calls me:
"Hey, I need some items fixed on my Tomcat servers, they told me you have to do it"
Me: "Who? those are your servers"
Him: "The net manager said that you would do it"
Me: "I am certain he didn't tell you that bud, no one here will take care of your servers, they are yours, I am not doing any configurations on your stuff, that is your job"
Him: "Can't you just do them?"
Me: "No, bye"

The little bitch escalated it to my department director, who told him exactly the same thing, the director did ask if I would be willing to assist, I told him no since even though his configurations were minimal, I was not going to put myself in the position to which that fucker's ineptitude would cause him to point fingers at me, director backed me up and told the fucker to deal with his own shit.

This year it came to my attention that not only do they have their owns servers, but their own SSO system. This moron contacted me, tagging VPS and such in the email to tell me that I had to configure his SSO because "they told me you had to do it". The same shit happened, but this time I put him on blast during a meeting and told him that as "sys admin" for his stuff it was his responsibility to deal with the SSO that they have, and to contact the vendor to ask for the specifications. In front of EVERYONE he asked me if I could do it for him, I fucking looooooooled and told him that he just admitted to not being able to do his job (for which he is paid handsomely) in front of the entire room of VPS. One VP asked me why I was not willing to help him, and I told the VP that it would be the equivalent of me taking his vehicle for services, it is not my vehicle, thus not my responsibility. The VP agreed and told the fucker to get on with it and do what I said: contact his vendor channels to figure it out himself since it was indeed his position.
Yet again he said that he didn't know about SSO configs and that he was "told that I would do it", everyone asked who the fuck told him that and he said that the vendor, they asked again how it was and he showed the message from the vendor telling him: "Have your SSO admin perform the following <bla bla bla bla>" they asked him who was the manager for the SSO that they had. He said that it was him. Then they asked him what logic made him believe that it should be me, he stated again "they told me it was him".

I could hear everyone's brains shortcircuiting as no one could believe someone would be this fucking dense.

I don't think he will continue to have his job for much longer. I understand not knowing something, and I would have been happy to give pointers since I do administer systems of that level, but I can't with the whole made up "they said he would do it"

Bitch who said that? just say that you want me to do it because you can't, I mean, I am still not fucking doing it, but damn. Fucking morons man.