Pokemon are not immune to this either. Come on, how many of us are guilty of doing something like this...and especiallythis, getting a chuckle and snicker every single time?
The fact that he forgot his grandson's name.
YMMV, but most of the time (especially after your first battle) after defeating Blue can feel like this. He is all cocky and so sure you're going to lose, only for you to hand his ass to him. I can't be the only one who snickered with a smug grin plastered on my face.
His desperate attempts to save face are pretty funny as well. When you beat him for the last time before the league, he claims that you still need practice. That's right, dude, I just curbstomped your entire team and I'm the one who needs practice. Uh-huh.