Chimping - the act of reviewing the picture you just took on the camera's LCD, is used as a way to disparage shooters.
I heard that chimping might refer to proudly showing off a shot after you taken it with a nice vocal accompaniment of ooh-ooh-aah, but I have also heard that just bothering to look at the LCD after you shoot is also chimping. Why is either a big deal?
I review the histogram of nearly every shot I take. Admittedly, I rarely shoot anything in motion, so there is NIL chance that I will miss the shot (perhaps the Eiffle Tower might get up and walk away, but I somehow doubt it). Usually after the first time I review the shot, I will not look at it again until it's on my computer but there was one image that I couldn't help but look at, again and again through out the evening.