When ones face is covered in a sweaty gloss caused by a long, massive masturbation session.

Commonly spotted on the faces of teenage boys after a Sunday spent trying to beat their record of eight tosses off in a day.
Have you seen Karl’s face today, it’s very red and shiny, he’s got a proper ‘wanker’s sheen’ on him, do you think he’s been tossing off all day?
by Marty the Hat May 25, 2020
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