I am adding meh and skye to this one;

Teacher : this is a partner work so draw a cow and some grasses

Skye: let's do it chels

Chels: too lazy to do it

Skye: same

-after a few minutes-

Skye and chels: we are done and done teacher!

Teacher :good work let meh see

Skye: *gives a blank paper *

Teacher :um.. It's empty where is the grasses!?

Chels: cow ate it

Teacher :then where is the cow?!

Skye:it moved to another place to get more grasses

Teacher :0-0