itis 

The drowsy sleepy feeling you get after eating a large meal. Usual meals like big Sunday dinners, Thanksgiving and Christmas meals.

Man that itis done got me. I'm fixin' to take a nap.

itis by Malinen23 July 23, 2008

Itis 

The feeling you get after you eat tons of food. You feel drowsy and do not want to do anything all day.

John:"yo bro, all of that Mexican food at Burrito Bandito gave me the itis."
Sam: "I know dude, I just wanna lay down and sleep dawg."

Itis by Kolvk October 3, 2012

Itis 

verb. i-tiss

Drowsy or sleepy effect linked to digesting large meals, usually high in fat or salt content.

Note: The digestive system uses roughly 60% of your energy while you idle about daily, so after eating large meals the digestive system takes energy from other areas of the body, allowing it to work faster, and bringing about a sleepy effect.

Melinda planned on waking up early and doing some shopping on Black Friday, but after her huge Thanksgiving meal the itis set in, and she woke up late in the afternoon.

Itis by The Grand Duke of Pike: Prince Charles May 28, 2008

Itis 

The feeling which one experiences after eating a large meal. Usually characterized by sluggish, drowsy, tired, or lethargic feelings.

Mark: "Wow, you just ate like three Big-Macs"
Andrew: "Yeah, the itis has really started setting in"

Itis by Mark TB January 31, 2009

itis 

That drowsy feelin u get after a big ass meal. U usually dont want to do anything or have lost the energy to do so. Recently popularized by black people

If u go over to yo grama's house and she cooks up a good meal like she always does u would get the itis from dat.

itis by Andre Benjamin December 31, 2007

Itis 

The heat high a marching band player experiences after completing a marching band show; usually happens and is most experienced during the fall and winter.

One marching band player to the other, after having completed a show:

Dude, I'm totally feeling this itis in my fingers

Itis by Rashinall November 8, 2010

itis 

the feeling of wanting to do nothing but sit on your porch and smoke a blunt and drink a 40oz

Dammn son, i gots the itis

itis by the officer May 17, 2006