Popcorning Pigs!!!

Ok, ok, this may sound random, but guinea pigs POPCORN when they are excited or happy! I quite often go out to see my guineas, and find them jumping around like mad things. So, I looked it up on the internet, and found that some people were calling it popcorning, and it meant they were happy! They call it popcorning because they jump like corn when it is popping!!