1. (US) a masturbator, lit. and fig.
|How to Talk Dirty 6: He knew he had a pervert living under his roof [...] a whacker!|
|Day of the Dog 48: Ya want to look out for those wackers.|
|Lockie Leonard, Legend (1998) 39: ‘Garry Pooley is a dweeb and a drongo.’ ‘A wacker, actually.’.|
|Reed Dict. of N.Z. Sl. 225: wacker/whacker 1. Male masturbator. ANZ. 2. Stupid and/or nerdy person. ANZ.|
2. as (affectionate/teasing) term of address.
|letter 12 July in Leader (2000) 211: I hope too that I get a bloody job before long, or I s’ll be on the breadline, wacker.|
|letter 5 May in Leader (2000) 319: Now’s your chance, whacker.|
|Teachers (1962) 25: Sorry, wacker.|
|Dict. of Kiwi Sl. 122/2: whacker wanker or masturbator, used as term of abuse, affection or affectionate abuse.|