poo marker 

the exact opposite of a no wiper

a poo marker is when you wipe your ass over and over and there is still a brown mark on the toilet paper every time, as if a marker made of poo is up your ass

poo marker by HJC123 September 5, 2009

Promarker 

Drugs for architects.

Are you high?
-Yeah, I've been sketching and used my Promarkers, they smell soooo goooood

Promarker by Interiorarchitect January 8, 2013