Wallybrain 

A stupid person with the brain a size of a pea!with ginger hair.

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

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.

Kate looked a total WILLYBRAIN in that sparkley bobblehat

willybrain by h.c. April 26, 2007

wallbrained 

to be fucked by a huge cock of 9 or more inches, probably from the increased likelihood of your head hitting the wall

Sarah got wallbrained by Chat after the party last night.

wallbrained by j0e2 December 24, 2007

wallbrainer 

one gifted with a huge cock of 9 or more inches

Chet is such a gorgeous wallbrainer.

wallbrainer by j0e2 December 24, 2007

Wallybanger 

Sex partnership, hatred, annoying people.

Hello Wallybanger!!

Wallybanger by Supernoodles.com August 21, 2019