a cartoon I want to draw

if I could, I would draw a cartoon of the following scene, which has been living in my head for a while.

two people are having a big piece of nam bread in front of them enjoying their dinner. they are both very polite and have been tearing small pieces of the nam bread for themselves. the moment comes when there is only a small bit left. neither of them wants to take the last piece because it's considered to be a little rude. so they kept spliting the small piece - first the size of a cd, then a coaster, then a 2 pound coin, then a penny, then almost like a grain of rice......
all the while the two people are chatting away as if nothing has happened, but both are very uneasy.