slang A condom. If you're having one-night stands, you should always use a rubber sock!
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
n. a timid person; a passive and compliant person. Come on! Stand up for your rights. Don’t be such a rubber sock!
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved.