whack off


verb

(intr, adverb) slang to masturbate

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Idioms and Phrases with whack off

whack off

1

Cut off, as in The cook whacked off the fish's head with one blow, or The barber whacked off more hair than I wanted him to. [Slang; first half of 1900s]

2

Masturbate, as in He went to his room and whacked off. [Vulgar slang; mid-1900s]

The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.