a term used only under severe circumstances, when one is extremely screwed. This is a more intense version of 'fuck me' or 'fuck my life'. Commonly used when one's life is completely falling apart, and there is no other way to describe the way they feel.
1.) Man i have five papers due and three tests tomorrow. I have no boyfriend and I'm fat and ugly. shit. FMITBH!
2.) My best friend just ran over my brother. And I'm pregnant. FMITBH!
3.)I just found out my boyfriend has been sleeping with my mom. FMITBH!
A term designed especially for IB (International Baccelaureate) students, which stands for Fuck My IB Life, and describes the feelings of wanting to sleep virtually anywhere, nerding it up, staying up doing homework til 5 in the morning, and losing sanity.