A word used predominately in the southern-part of the ContinentalUnited States, when one defecates for an extended period of time after visiting Golden Corral on a bright, joyous Sunday afternoon and consuming a copious amount of poultry.
1. The opposite of shitty.
2. of very good quality; highly superior.
3. admirable; good, awesome.
3. fortunate; pleasant.
4. Being in a state of comfort or happiness; delighted.
5. competent; adept.
Denise: Wow, Jackie seems so happy. She's all smiles even though David just broke up with her.
Cindy: Yeah, that's Jackie though, she is un-shittable-on.
It is a Portuguese expression, translated to "desenmerda-te!", that is used when you want to say to someone that they're stuck in the mud and they need to sort their stuff out.
Nao ha comboio hoje? Vens a pe! Desenmerda-te! Tens de ca vir ter - Is there no trains today? Come on foot! Unshit yourself. you've got to come here!