west coast expression meaning a person who is a complete tool.
an "egg-on toast" is usually the younger sibling of a friend
Guy 1:"that guy is so annoying!"
Guy 2:"yeah, he's a real egg-on toast"
E-O T:"hey guys! hey! hey! i'm over here! heeeey!"
Girl 1:(to Girl 2)"oh. mygod. she/he is such an egg-on toast"