personally, I've always thought tickling to be a form of abuse and aggression, no matter who is getting tickled.
I hated being tickled when I was a kid, and I still hate it.
Now I see that people think that tickling a slow loris is "cute" when, in fact it's form of torture.
A slow loris is not a pet. Neither is a "micro" pig or a monkey.
UK Telegraph: Slow lorises, marmosets and micro-pigs: the problem with exotic pet trends
International Animal Rescue: The truth behind the slow loris pet trade