Dilio is a word nerds use when they want to try to be cool.It means deal and is usually used with a weird english accent.It is not really that cool and should only be used occasionally because of it's god damn weirdness.
Nerd:Hey yo what's the dilio?
Other person:Shut up dweeb.
Nerd:Is there something wrong with my dilio?
Other person:No there's something wrong with you.