Getting tickled is worse because there is the added risk of peeing your pants.
Pinching just hurts.
As a middle school teacher, I dreaded Saint Patrick’s Day. I would inevitably forget to wear green, and then get pinched all day long by nerdy 13-year-olds.
Thinking back on it, I’m grateful Saint Patrick’s Day didn't also involve tickling. That would have been awkward. For all of us.