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A unique carnivorous mammal that can be found deep in the western suburbs of Illinois. Characterized by a rough, spiky exterior and its ability to impersonate other mammals like it which it does due to a feeling of inferiority and lack of self-confidence. The male mercasou is near extinction due to its innate characteristic that repels its female species.
The other day National Geographic had a special on the mercasou...did you know that it is actually white on the outside but black on the inside?
mercasou by Skinny face August 15, 2008
Related Words
A type of person who believes in mercy and grace. No matter their attackers actions, a victim who is a mercist forgave the attacker anyway.
"Even though he stole your diamonds and gold, You forgave him anyway? You are a mercist."
mercist by DoctorImmunity June 13, 2022

merchiston castle 

merchiston castle is a posh school
merchiston castle by Andrew XY January 14, 2008
a statement to identify something stupid, ridiculous, and/or way off the actual meaning as said by the notorious anthony mercadante from wilkes-barre,pa
Anthony made another Mercism with his shoot two stones with one bird comment.
Mercism by cmerc January 11, 2008