So regarding Fu's name it's not actually Fak.. The author was playing a joke by swapping letters around to form a different sentence.

Title of the series goes as,

"P'Fak chob ter, Moo." (P'Fak likes you, Moo)

Which actually means, 

"P'Fu chob ter mak." (P'Fu likes you a lot)

These two dialogues were in the pilot trailer too. The letters F and M has swapped their positions which ended up rhyming. (Fak/mak rhymes, & Fu/ Moo rhymes)

Translation ref © Phi @midknightmoodz