I don't know... maybe the classic: "walk and chew gum at the same time"? No problem for me.
Perhaps the old "pat your head and rub your belly at the same time" bit? No problem.
Play three different music CD's on three different players at the same time and be able to enjoy it? I can do that.
Look like I'm actually listening to gossip and try to get my job done? That, on the other hand, ain't happening. Plan and organize my time for two or more tasks I'm unfamiliar with? I'm hopeless at that.
And I agree completely - a kitchen is, in a way, the worst place for an aspie to work, with all the pressure and noise and pecking-order-politics and screaming and shouting and so on. I can speak from over 10 years experience in about 5 or 6 different kitchens on that - at least, it was usually a non-stop surreal nightmare for me. Unfortunately, it's the only job I can ever get - kitchens will hire just about anyone! I've seen grown men and women, that I'm almost completly certain are Aspies, publicly cry in that environment, and people still not let up on them. And I probably held the record on melt-downs everywhere I worked. I got fired from every kitchen job I've ever had, for "insubordination" in every case (including, I figure, the one where the boss suddenly took to repeatedly changing my schedule without warning until he fired me officially for tardiness, but privately gave me the cryptic reason of: "Now, there's only one boss around here, and that's ME, got it?" I barely talked to anyone, let alone bossed them around, so I never did actually "get it", but he seemed to think he taught me a lesson, so....)
And, about ringing phones: in High School I once got a summer job working in a government office, where I answered phones a lot. I hated that part: I always got the messages mixed up, messed up phone numbers and appointment times, got the agents names confused, and things like that. My supervisors quickly got disgusted with me. But I did get to spend some time alone doing nothing but organizing and filing reports from field agents, which I enjoyed a lot. (All I was supposed to do was count the reports and make a record of the numbers of reports sent by each agent, but I read the reports anyway - often barely literate, and in many cases there would be reports that went like "I was supposed to go to work to day, but I called in sick to have a party instead. So that's my report. Nobody ever reads these things, anyway." They were right: it was the quantity of the reports that mattered, not the quality of the content.) I think the supervisors were glad when Summer ended and they could get rid of me