What does popping the p mean?

Oh, dude, popping the P is like when you're recording audio and the sound of your "P" sounds too intense, so you use a pop filter to soften it. It's like putting a little pillow in front of your microphone to make sure your plosives don't sound like you're trying to blow the house down. So yeah, popping the P is just a fancy way of saying "chill out, microphone, I'm not trying to start a tornado here."