Lagoon monster 

A hideous and disgusting person

Those people all look like Lagoon Monsters!

Lagoon monster by Guylikespieforlife December 28, 2022

Lagoon Monster 

a trick used to scare young children, preferably while in water

Lagoon Monster- "Im the Lagoon Monster, ABOO-BOO-BOO-BOO-BOO-BOO"
child- "your not scary"
Lagoon monster- "Your parents dont love you"

Lagoon Monster by Pete DeFilippo August 6, 2007

Lagoon Monster 

A large turd in the toilet….. whereas the lagoon would be the toilet bowl

Hey Dave, hang on a second, I gotta go drop a “Lagoon Monster”

Lagoon Monster by .Captain Rabbit June 22, 2025