People often argue on how to pronounce GIF as “Jif” or “Gif”. PNG on the other hand, majority pronounce it as “Pee En Gee” and this include people who are expert in imaging field.
According to W3, PNG is pronounce as “ping”.
You may want to try play jokes with your colleagues and see how they will react. example:
“I have sent a ping file to you through email”.
And see how their confuse face.
