A retarded person, mongoloid, thicko, spak etc...So named after a man called Joey Deacon who was featured on Blue Peter back in 1981 in relation to their fundraiser that particular year. Joey was known as a tv personality. Children born in the early 1970's will remember him well. Schoolchildren throughout the UK started insulting everyone Joeys whilst doing a hand gesture with their hands twisted inwards at the wrist and making a 'mongy sound' as they said 'Joey'.
Someone who is very obnoxious, but yet always makes you smile or laugh. Easy to get along with or forgive. You could talk to him forever without noticing the time or whats going on.
The whitest boy you have ever seen. He is the equivalent to a blonde lesbian. thinks he can get in any girls pants. looks like a downs syndrome tiger. made some shitty music.lys