The act of going onto your friends' profile, (tends to be males looking at females), going onto their photos and proceeding to masturbate.

It's usually done over an attractive female friend's beach photos and whilst only tools will admit to it, every man has done it at some point.
I don't like the idea of people wankbooking over that photo
by Mr. K to the T January 9, 2011
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A book of pornographic photos next to your your bed or in your pocket.
Me: "I forgot my book..."
Teacher: "Just read your wankbook"
Me: "Aite"
by donolesen April 13, 2018
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