look up any word, like bae:
 
1.
To feel tired or sluggish
"Time for a break. The group is getting logy"
by Don Rae December 09, 2006
 
2.
The "logies" refers to the sluggish or sleepy feeling that one develops after eating a large meal.
No, I can't move. I destroyed that pizza and now I have a bad case of the "logies."
by partyviking June 26, 2013