Lesson no.1 from Sirius:
Don't forget to use the phrase "do one" in casual conversation, it will surely impress teachers and students alike.
Example usage:
Mr Teacher: "Hello Luthien, please can you tell the class why you want to learn English"
Luthien: "Do one, Teacher-grade"
(this translates as "Get thee away from me, oh teacher who is a 'Grade A' example of being an complete and utter idiot".)
The suffix 'grade' can be added on to any words to add the "idiot" descriptor. However it should be noted that the term itself although originally an insult, has now also fallen into common usage as a term of endearment, so understanding the context is essential:
"Oy! English-grades!" = "Hey there English holidaymakers drinking too much beer and being obnoxious and annoying!"
"Hey, Therion-grades!" = "Hi there Therion bandmembers, how's it going?"
Now you know all you need to know about English. I hope that helped.
