ASS-UMER 

A person that assumes anything they think is true even though it’s not. Mostly a person who always says that another person lies about everything even though they are god damn honest. The assumer can be a nuisance and makes an ASS not only out of themselves but all the people around them.

Jerry: Hey mike, you pissed in the tub!

Mike: No Jerry that was the dog you ASS-UMER!

Jerry: why did you space out assumer?

Mike: ASS-UMER means that you make an ass always assuming things that are not true.

ASS-UMER by The guy with the orange July 11, 2018

assumer 

a person with a tendency to jump to conclusions without proof or evidence.

Ryan is such an assumer. You can't tell him anything without him jumping the gun.

assumer by kevin benham July 13, 2006

Assumer 

When an individual tends to take on a certain form,attribute or aspect of things very quickly and abruptly;when he/she might think one thing just because you might have said another thing about that subject

Gosh billy was such an assumer yesterday when I texted him,he wanted to go to the movies but I told him I wanted to go with Sandra instead because it would've been fun,then he thought I was saying he wasn't fun?! Like c'mon billy.

Assumer by Ya know it August 24, 2016

Assumer 

A person who assumes

Oh you're gonna assume now you assumer?

Assumer by RetardedRuby April 24, 2022

Assumers

Assholes consuming rumors

I don’t like Assumers, they never want info directly from the source.

Assumers by GJeezz May 25, 2022

Life Assumer 

A life assumer assumes everything you do is about him or her.

I was having sex with my girlfriend, and my gay roommate, who is a life assumer, said, "You're not enjoying that; you're just doing that to make fun of me."

Life Assumer by Jack Daniels 2011 October 25, 2011