what is this douchery?

I was discussing my proposal with my supervisor when another student interrupted us. It seems that whatever he wanted to say was super urgent so I was like, it's okay I don't mind.

Turned out he wanted my supervisor to read his proposal.

Turned out he left it at home/didn't write it yet forgot to bring it along.

What?!? Why are you interrupting my session??? 

Why are you even in this university? (O_o)