slang A party featuring the consumption of beer, often in large quantities. Hops are an ingredient of beer. I'm worried that the kids are going to have a hopfest while we're out of town.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
n. a beer-drinking party. We went to a big hopfest over at Willy’s, but it broke up early.
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved.