No matter what Incognito does they can’t seem to foil the wedding ceremonies.  But after 
seeing Kon laying out dominos, Erec can’t take any more and does the unthinkable.
pretend that they know something, or 
pretend that they don't know anything?
deberían pretender que saben algo 
o pretender que no saben nada?
fingir que sabem de alguma coisa, 
ou fingir que não sabem de nada?