חפשו מילה כלשהי, כמו wyd:
 
1.
Shit that builds up in one's head as a result of daily living and experience.

Mental tartar.
I need some mental-floss, there's just too much shit clogging my head.

Did you let the dog out? Uhh, I don't know.
מאת s6 5 ביולי, 2005