Ideal Gas in the Classroom: Quiet and Not Smelly?

[SELFMADE]

We were in our intro physics class and the prof was talking about ideal gas. He asked what are the qualities of ideal gas to which I replied "quiet and not smelly". Classroom exploded

 

[Andy]

Friend of mine once walked into class several minutes late, when asked by the teacher why he was late he very calmly announced "because I am not early."