A Dinabeer is a drink (usually a beer) that is discovered to be still mostly full. This typically happens when cleaning up from a party the next morning. Dinabeers are especially annoying because instead of just dumping all the cans/cups into the trash, you have to pour out the warm, wasted beer.
Aww man, there are like 5 Dinabeers, thats like wasting 3 whole beers!
by worthK3 October 07, 2011