granddad(redirected from the grand-dad)
slang Someone who acts in an outdated and uncool manner. Oh, he's a real granddad. He'll never go to a club with us.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
n. an old-fashioned person; an out-of-date person. Don’t be such a granddad. Live a little.
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved.