Hilarious ... My little sister told me this and I wasn't expecting it at all. :
He looks at your shoes while he's talking to you instead of his own.
He's staring at somebody else's shoes.
When the old one expects you to "do your share"
irony irne/ noun a state of affairs or an event that seems deliberately contrary to what one expects and is often amusing as a result.
A Nii-san
Because you already know who it's isss! My little sister told me this joke.