What this is

This is a SURFACE

2 Responses to “What this is”

  1. ik says:

    The solution must be on the back! :)

    (Compare the cool cartoon of Ptiluc, ‘Les rats, No 11’, where a rat tries to get to the back of the cartoon saying, “C’est la derriere qu’y a la solution du mystere.”)

  2. rattus says:

    Sure, the back called front :)