Top Definition

Getting a strained wrist from working a computer mouse with one hand (e.g., to download porn), and jacking self off with the other. It's generally the lower of the two wrists that develops the syndrome first.
"Jed says his right (left) wrist hurts."

"Probably poor ergonomic design at his workstation. He's wanked himself into a case of Fappal Tunnel Syndrome. Someone get a crowbar and pry him off that computer. Sheesh!"
by al-in-chgo March 05, 2011
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