(mute) conversation in class
M: Do you think he shaves his head everyday, like his beard?
Me: [Looking at subject] If he does shaves his head daily then he's really bad at it. Cos there's razor bumps on his head!
M: That's why I asked!
... Interlude ...
Subject attempts to be funny.
M: It is really painful to listen to his jokes..
Me: [Trying to disguise my burst of laugher]
Subject attempts to be funny again.
M: [Underlines the previous sentence] It is really painful to listen to his jokes..
End.