Catholics and Eastern Orthodox 'christians',why do your churches claim to be built on St.Peter's dead body?

@catholic/orthodox believers-u r all misled.Jesus didn't mean he will built his church on peter's dead body as you claim,but on the revelation that was given to peter-that Jesus is the eternal,only begotten son of God.That is why Jesus called peter as petros (a small unstable stone) and on this petra(a large immovable mass of rock)-which is, this revelation that points to who Jesus is, on which the church is built.This is the true spiritual interpretation of the passage in contrast to your ignorant interpretation,which is earthly,fleshly and was created in 4th century Rome by emperor constantine,to consolidate roman empires military power by corrupting God's church.