by melena March 23, 2007

When some one has a square head
by Itsmebitchassho July 4, 2016

Charlie Brown. Name every time he’s been called a blockhead.
Basically a stupid person or someone you deem stupid
Basically a stupid person or someone you deem stupid
by Ch4rl13 br0wn January 3, 2025

Spongebob's Nickname That Grumpy Cat Calls Him. She Calls Him ''Blockhead'' Because She Thinks His Real Name Is Stupid & She Also Thinks His Head Is A Block. Pom Calls Him ''The Wi-Fi Wizard''.
by Handle Here May 24, 2018

a box of some sort which is placed on the head and is rotated vigorously in order to ruin the hairstyle of the victim- thus giving them A blockhead.
There is also blockhead resistant gel that can be worn to protect ones hairstyle.
There is also blockhead resistant gel that can be worn to protect ones hairstyle.
Oh that Moonhead has got a proper blockhead after we got him with the blockhead machine! he's been merked
by Sie n Grev October 9, 2007

The two most badass characters in history, they're from Gumby and both resemble wooden letter blocks with the letters J and G on them each, but some other letters and numbers can be seen in different episodes. G is usually seen as the leader of J, but they both slap each other often.
Guy 1: bro did you see what the Blockheads just did?
Guy 2: yeah bro they kidnapped an elephant, funniest shit I've ever seen.
Guy 2: yeah bro they kidnapped an elephant, funniest shit I've ever seen.
by DankoBlanko September 26, 2021
