whack off

British  

verb

1. slang (intr, adverb) to masturbate

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whack off Idioms  

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]

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Example Sentences

“When you go and whack off the top of a plant … is that an emotional response?” she asks.

From Nature

"We expected revenue to come down. We expected a year like this where foreign exchange would take a whack off revenues."

From Reuters

I used a cleaver to whack off big slices, which I roasted without peeling for some recipes, and peeled and cut into dice for others.

From New York Times

Download as MP3 White Noise Sound Alive Records 2010 With the late 80s/early 90s shoegazing sound now impossibly de rigueur, this Swansea sextet have recruited Spacemen 3's Pete Kember to help recreate the influential Rugby's band's sound as accurately as a reproduction artist might whack off a moody Mona Lisa.

From The Guardian