Wallybrain
A wallybrain seriously thinks that they can lose 5 stone in 5 months and simply cannot go past Mcdonalds without popping in for a mighty feast.
Wallybrain by heaver July 11, 2006
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willybrain
a midly offensive term meaning a human being who quite simply has a penis inside their skull rather than a brain, therefore a willy brain. due to the lack of a brain they make foolish decisions and are very unfortunate, usually a person who is dullwitted and commonly unattractive to look at. it is taken from the latin "williusbrainionia" which roughly translates to willybrain.
willybrain by h.c. April 26, 2007
Related Words
wallbrained
to be fucked by a huge cock of 9 or more inches, probably from the increased likelihood of your head hitting the wall
wallbrained by j0e2 December 24, 2007