stupidestrian 

Someone who walks in front of a moving vehicle. (see also Stupedestrian)

Sarah walked out into the road without looking, she's such a stupidestrian. (see also Stupedestrian)

stupidestrian by Sarah Anderson March 9, 2008

stupiderer 

more stupid than something

you are stupiderer than him

you are more stupid than him

stupiderer by scott walton November 27, 2006

Stupedestrian 

Someone who walks in front of a moving vehicle.

Sarah walked out into the road without looking, she's such a stupedestrian

Stupedestrian by Sarah Anderson February 19, 2007

Stupidest

It’s not a word, but it will be one day. You can use the word if you’re in an argument of some sort or just a regular conversation. Like said, it will one day become a word...

Me: I’m the stupidest here!

Stupidest by Moaning Earrape March 24, 2019

Stupidese 

The modern day orthography of teenagers

Stupidese as seen in the wild:

"hey hun ur mi gurl got beef call mi up luv u!"

Stupidese by TragedyTrousers3 September 11, 2012

El Stupidente

A national leader prone to making mistakes. ie. President Bush

El Stupidente made a secret trip to Iraq last week.

El Stupidente by nunna yabiznis December 10, 2003

Stupidest animal on the planet 

Cooper

Cooper is the stupidest animal on the planet.

Stupidest animal on the planet by Doug Jiggly Jr. October 18, 2021