look up any word, like swag:
 
1.
- To drink alone, all by yourself.

When someone has no one else to drink with, but still feels like putting some down; They're Thorogoodin'.
A reference to George Thorogood's hit song, "I Drink Alone." Where he promptly states, "I drink alone, yeah with nobody else."
(Example)

Kurt: Let's grab some drinks.

Nick: Can't do it; Have to work in the morning.

Kurt: Looks like I'm Thorogoodin' it then...
by Splick November 23, 2011