Similar to 'yeet'. Used to describe a situation when one does not have something better to say, or when finishing a rather problematic task. Can be used as an adjective, verb, Noun or just at any time.
What's up with Tim!? He's been winning like he's Charlie Sheen lately.. Did he have a quadruple espresso this morning!?
- Nah man Tim's all yerbed up on that Yerba Mate tea.. I thought maybe he just found a girlfriend or won the lottery, but no, he's all yerbed out sippin that yerba mate like a fucking god emperor