Some shit that doesn't exist because Apatosaurus killed it in its sleep.
Boobs? Ha, those are Brontosauruses, bra stuffer!
by Trololololium September 26, 2011

The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

Buy the mug
Top Definition
An incorrect name given to a sauropod skeleton. It was originally believed to be a new genus, but was later understood to be the same creature as the Apatosaurus.
Brontosaurus burgers couldn't have existed, correct?
by Diggity Monkeez March 17, 2005

The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

Buy the mug
A term used to indicate a very old person.
"That old hag's a friggin' brontosaurus!"
by Dave January 14, 2004

The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

Buy the mug
When a 7 year old curly haired kid gives a blowie to a T-Rex
Yes Brontosaurus give it me in the ass
via giphy
by My name is Danekwa February 19, 2017

The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

Buy the mug
The act of kicking someone square in the rectum with the toe of the foot.
Johnny brontosaurused Jim right after he made a joke about his penis size.
by Kwzono June 24, 2007

The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

Buy the mug
A nickname for the penis.
"Mark, quit tugging on your Brontosaurus in the theater!"
by CCOBB April 01, 2006

The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

Buy the mug