To have lots of your time wasted by Siebel, usually as a result of Siebel not working as specified, or having undocumented and unexpected features.
Developer 1: I just spent the last 6 hours trying to get this small Siebel (workflow, script, config) working, and it's still screwed. I think it hates me.
Developer 2: Mate, you just got Siebeled. You can be working till midnight each night for the rest of the week, and you'll still feel like you've gone nowhere.
Developer 1: Damn Siebel!