A chusk is someone who eats everything in their path. There is no stopping a chusk. They live the ideal lifestyle- all they do is eat and sleep. Chusks are usually lazy and large. They eat because they are unhappy and they are unhappy because they eat. Snorlax is the original chusk, and many people fell in love with his lifestyle and want to be just like him.
"She is such a chusk"
"Yeah but there's nothing to you can do about it. Look!"
*Chusk eats and then immediately falls asleep*
"Yeah. She's a lost cause.