Tomorrow is Easter and as all the properly trained Catholics know that's the day Jesus Christ rose from the dead- or move the rock behind the cave, crawled out and then ran away.
Maybe that's why we hide eggs and look for them? The eggs symbolize us looking for Jesus. Jesus come out come out where ever you are! Wait...did I just ask Jesus to come out?
Hiding Jesus' body in that cave is like a bad movie plot turn where the bad guy locks up the good guy assuming he's going to die but stupidly doesn't witness his death- and then fast forward 10 minutes into the movie and the good guy has escaped and the bad guy is like "How did this happen?" Jesus is Indiana Jones.