look up any word, like yeet:
 
1.
A complete fourth meal eaten with friends after a night of drinking, usually at a 24-hour diner between the hours of 2 and 5 AM. Shamefast is a great opportunity to recap what may have been missed (or forgotten) earlier that night.
Dood, I'm over this. Let's head out and grab shamefast at the diner on the corner.
by zomgjustsomeguy March 27, 2011