He sure knows how to cry up a storm.
Could those possibly be tears of joy?
He sure looks like he's in great pain.
They almost love it as much as going after Ash's Pikachu.
This was his exact reaction to that purple-haired girl.
She doesn't appear to be pleased with Brock's over-the-top reaction.
He even chose a wig that matched his face. Still, May would've been probably been better for the job.