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8.
A man, overweight with a bigger than normal neck. Sign of a dumbass
You see that guy there, that Dan Ferry, what a fat neck.
by Al Lazzerman December 10, 2003
 
9.
somebody that has low mental capacity due to smoking too much weed
"oi FUCK, harvey you are the dumbest FAT NECK cunty lips i have ever seen, fork out for $5 of fuel you cash leg white neck"
by Nizzla September 04, 2003
 
10.
A retard. Someone requiring special attention. Someone acting like an ass\.
Look at the fat neck in the wheel chair.
by Mike K January 14, 2003