Serial soiler 

A person with very poor bowel control who has repeatedly shat themselves either out of laziness or lack of control

MAN: *stood with a brown stain on his pants*
BOY: “look mum it’s the serial soiler”

Serial soiler by Urban man202 August 2, 2024

Serial Smiler 

Someone who has the same smile in virtually all the pictures that they take.

Bob: Dude, I've been looking at this girl's Facebook pictures for about 10 minutes now, and she has the same smile on her face in every one of them!

Tom: It's official; she's a Serial Smiler.

Serial Smiler by Yahhhhhhhh August 17, 2010