To munger is to use a website for other than its intended use. One common munger is to look a word up on Amazon when you are at the library. Another common munger is to type a word into Google to see how to spell it correctly. These are examples of mungers because Amazon was not built to help you check books out of a library and Google wasn't built as a spell checker, but both websites can be used for those purposes.
Snooping on your neighbors on Zillow?! That's such a munger.
by leafygreen October 23, 2015
A lurker on Chatroulette that watches with their web cam switched off
You never get to see anyone's faces on here, the site is full of mungers
by Gobshite February 14, 2014