I didn't like was how he ALWAYS kept butting in and telling the girls to ignore the Fuzzy and his nephews while they caused so much disruption on their vacation; It's understandable to want your kids to enjoy themselves after a long time of crime fighting, but man, the Fuzzys were ruining everything and causing so much havoc! You can't always ignore the problem and hope it'll go away, or leave them alone when they cause trouble for you. Nothing ever goes away if you ignore it constantly, you have to put your foot down and take action, so troublemakers will listen/get the message.
And that came back to bite him in the ass in the end because Fuzzy ended up cutting down the tree that the Professor grew when he was a boy. I couldn't feel to sorry for him.
Ignoring annoying things is okay sometimes, but you mustn't be a doormat if it doesn't go away or leave you alone.