A person or group of people that are affected by the sun. For some reason when the sun is shining it spurs people to become giant assholes, beep at people with their cars and procede to remove all clothing save for socks.

The word is formed from the words "Dickhead" meaning "Dickhead" and Lizzard, due to lizzards getting their energy from the sun.
Dickhead Lizzard - "aaaa boooohhh, am gun beep yhu wit mah car an drive awai!!!!!!"

Padestrian - "SUCK A CHODE YOU DICKHEAD LIZZARD!"
by Dove For Men Deoderant. April 20, 2011
Get the Dickhead Lizzard mug.