It is a Britsih slang term which describes one who plays with his/her own fat in order to gain pleasurable satisfaction.
Jimb: Man,Carl is so fat.
jake: Yeah, I bet he's a flobbknocker.
Jimb: That's the only way he'd get any action anyway.
jake: Yeah, I bet he's a flobbknocker.
Jimb: That's the only way he'd get any action anyway.
by Kuzu May 10, 2010
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