cell-tard 

A person so insecure that the cannot function in life without having a cell phone attached to their ear. Typically, a younger person.

Look at that group of cell-tards walking down the street!

cell-tard by RW321 August 17, 2008

cell-u-lar-tardation 

a. The state of owning a cell phone and having absolutely no idea how to use it.

b. An acquired state of mental retardation due to radio wave damage of the brain as a result of insessant use of a cellular phone.

Fred's 18 year old daughter, Lisa, has an advanced stage of cell-u-lar-tardation that is irreversible. It's a real shame that he didn't understand the consequences back at age 2, when she got her first cell phone.

cell-u-lar-tardation by poppilopo June 12, 2009

celltard 

1. The person in the audience at a concert, play, movie, etc, who forgot to turn off his/her cell phone and is reminded of that fact by getting a call during the event, much to the irritation of everyone else nearby.

2. Someone who feels the need to yell into his/her cell phone far above and beyond normal conversational volume, much to the irritation of everyone else nearby.

Distant reverberating phone ring: beep boop boop beepity beep boop boop!
Other people in audience: What a celltard!

Celltard: BLAH BLAH BLLAAHHHH! BBBLLLAAHHH!
Other people: Shh!

celltard by creaternity May 9, 2006