1) verb: to take something without asking or paying, especially the last of something; to borrow something with no intention of ever returning it; to try to repay a small debt with a twenty when you know the debtor can't break it.
2) verb: to spill someone in someone else's place with no intention of cleaning it up
1) He kavsed the last two beers from my fridge. I should have seen it coming, he's such a mooch.
2) Pete kavsed like three diet cokes all over my table, while getting hot on the box.