dibs
n.n. the right to choose something first, especially when you have already decided you want it. You use this when you want to make sure no one else takes what you want.
n. the right or claim to something, typically established by being the first to express interest.
I call dibs on the last slice of pizza.
As soon as the tickets went on sale, he called dibs on the best seats in the front row.
While the team was still deciding on the final strategy, the lead researcher called dibs on the most promising data set for her upcoming presentation.
Since the early 19th century, of disputed origin. Most commonly thought to be from dibstones (“counters used in a game with the same name”). Also from dib (“to tap”) or related to northern English dip (“small depression in the ground”), or a shortened version of divide.
From Arabic دِبْس (dibs).