What does this sentence mean?
What was over there?
Freaky pink primates!
Why 'pink' ? What is the exact meaning?
It was in Over the Hedge.
All the characters in "Over the Hedge" are animals.
Imagine you were an animal and all the beings you've ever been exposed to are other animals. Then you see human beings for the first time. How would "they" appear to you?
Freaky, pink primates.
Monkeys, which the film's characters are familiar with, are all black because of the hair covering their bodies.
This is the first time "pink" monkeys have ever been sighted – monkeys with no hair.
This is used to describe humans - the humans seen are caucasians.
The speaker, being an animal, identified humans as a type of primate, and the adjectives 'freaky' and 'pink' are pretty accurate in this context:
I thought of speaker as animal (primate or akin perhaps) at first (too). But a non-pink...whatever...having such vocabulary in regard to kith and kin (why not freaky chimp? Or orange man?) makes it not so certain.
Perhaps they really were pink freaks, as in untanned, hippie-communal-live-for-luv, (Caucasian) returners to their distant cousins' natural abode.