*chuckles* I don't think it's the pride at all. Sad to say, we're just terrible when it comes to the Tagalog language. Another reason is probably how most (mind you, not all since I know a few good ones) pronounce certain words i.e Sparkle (they read it as Sparkel) or Google that becomes Googel and no way, I'm not planning to read it that way.
On the side note, this was when my colleagues went to Manila for some kind of training:
Inside the jeepney:
Friend: Manong bayad po.
After getting the change, seeing that the amount is lacking.
Friend: Manong hindi po tumama.
Friend 2: Hoy, pataka lang ka dah. (Diverting the attention to the driver) Manong hindi po totoo ang sukli.
Me: *zip*