When someone, usually fat, waits around for the elevator to go down only 1 floor, when the stairs are right there. This is called taking the lazyvator. Usually noticed by thinner people who are in a hurry, and has a negative connotation.
Raj: "I am so annoyed- I was trying to get down from the 10th floor all the way to the basement, and we had to stop 6 times cause all these people kept taking the lazyvator!"
Greg: "Were they eating cheetoes?"
Raj: "You bet they were!"