According to www.sesamestreet.org...
"Grover is a valiant, caring blue monster who is chock-full of childlike exuberance. The boisterous little monster often gets himself into pickles by rushing into situations without weighing the consequences."
Somebody is either pissed at Grover or is looking for a little man on Muppet action.
Go suck yourself Grover, you don't have any ribs!