Top definition
The group feeling and/or vocal response to individuals who save a party with a massive beer run.
The keg was done but Dylan and Amy came back with three cases of Yuengling Porter. After the news spread to the uninvited people in the backyard, it resulted in a huge Beer Yay.
by SmokeFilledRoommate October 11, 2009
Get the mug
Get a Beer Yay mug for your bunkmate Sarah.