When you try to cram as many services (or vms) onto a singlemachine as possible.
We're moving our database, app servers, reporting, message queues, mail servers, and static content to a singlemachine as part of the Clown Computing initiative.
The act of inserting an ear of corn (husk and all) into the anus of a willing sexual partner. You then donkey punch the individual and simultaneously rip the ear of corn out. If performed correctly, you should be left with a corn cob.