If you are given something to do, or do something off your own back and use initiative, you may be congratulated for "Technically Supporting Yourself"
Stu: Oh Technical Support Yourself!
Mark: I've fixed the problem with that customer from earlier, you know, the one that was a right fist..
Mike: Oh get in there, Technical Support Yourself Jenko!
Mike: I'll put the kettle on
Mark: Technically Supporting Yourself Lovelock!