Roger is standing guard with the other biguns and is prepared to enforce Jack's authority by using intimidation and violence if necessary. He relishes the power and control he has in this moment, eager to assert his dominance over the others.
The tribe of savages steals Piggy's glasses from Ralph. These glasses are used to start fires in the story.
While the boys are at castle rock (near the end if the novel), Roger is getting ready to roll a boulder on Piggy, which kills him.
Ralph wanted Piggy, the twins and himself to tidy up and wear their clothes, hoping by doing so he could remind Jack and his tribe that they weren't really a tribe of savages at all but simply English schoolboys.
Ralph, Sam and Eric, and Piggy = To tend to the fire and get rescued. Jack and the Savages = To have fun
raining and storming out
The 'secret' which Piggy entrusted to Ralph was that at school he had been nicknamed Piggy. Once he tells Ralph and Ralph later reveals this to the rest of the boys the nickname is used whenever he is referred to and his real name is never actually revealed.
Piggy is Ralph's best ally but he does not stand up for Piggy.
Ralph is obviously the leader and Piggy is a followers, he likes to please Ralph. Ralph is also stronger and smarter, unlike Piggy. ..... Poor Piggy
Well in chapter 10 Jack and his tribe of savages invade Ralph's tribe (made of up Ralph, Sam and Eric, Piggy, and one/two littluns) in order to steal Piggy's glasses, which is overall the power to start a fire on the island. Jack might have mentioned this plan in chapter 9 so I'm hoping this is the right answer to your question.
Piggy and Ralph are in a last attempt to stop the savagery at the Castle Rock, where the savages have camped. Roger is atop the castle as the others argue, and Roger pivots a lever that causes a boulder to fall, and it falls onto Piggy, shattering the conch and knocking him over the edge to his death.
Ralph wants to get Piggy's specs back and Piggy wanted to kill Jack there and then.
he keeps on saying piggy piggy and he lets jack and the other know his name and they teases him about it