A cooler way of saying "me too". Usually used when trying to sound lame in order to get a laugh out of the person you are trying to impress.Also used by dudebroze.
Chelsey: Wow, that test was a lot harder than I expected!
Brad: Samesies. That fuckin' test rocked my shit, brah.
Chelsey: Lawl! You dudebroze are soo funny! Here's my number.
An expression commonly used by those with both the intellect and maturity of a seventh grader, to communicate that one sympathizes with, has committed similar actions as, or to simply agree with another person. However, it can also be utilized by those with a veteran sense of humor and a thorough history of meme-creation.