To believe that this is actually his dear father. He stubbornly insists that he is either:
a) Mom or
b) Mommy or
c) Momma or
d) Mommommomom! or
e) MOMMY!! or
Jake has decided to be an adult, stop fighting the toddler, and just shoot a smile in the direction of his confusion instead.
Rad geniually seems to have no answer to the question "who's your daddy?"