It is a combination of the word titties and rolls. Most common among portly women. When there's no distinction between the rolls of fat that run a long their sides and their breasts.
Zack: Damn! That girl may be portly but she has some huge knockers!
Joe: Yeah your right! Oh wait. The're just ritties.
Zack: Shit! I've been drinking way to long.
A street name for Ritalin (Methylphenidate). Ritalin is a Schedule II stimulant with effects similar to amphetamines. Usually taken orally or crushed and snorted.
Hey man, you got those 10mg rittys I was askin' for?
A word used to describe something that is not right or a bit odd. It can also be used to describe a situation which is not good or people are finding the situation bad or grim.
Max:"Wow that burger tastes really strange!"
Gabes:"Something isn't right in this burger"
Donnie:"Yeah that burgers bare