vulgar slang A cramp in one's hand or wrist that arises from repetitive movements, sometimes literally excessive masturbation. A: "You were in the shower for an awfully long time—you must have wanker's cramp by now." B: "Har, har. That's not what I was doing, OK?" Working with all these tiny little screws is going to give me wanker's cramp by the end of the day.
See also: cramp
Farlex Dictionary of Idioms. © 2022 Farlex, Inc, all rights reserved.