Urban Dictionary Trolling and Hoping
When one seeks to look up a word or phrase on Urbandictionary.com but before they get the chance get distracted and forget what they wanted to look up, but still remember that they do want to look something up. As a result they go to Urbandictionary.com and repeatedly use the random option, hoping they will happen upon the word in question. Could also work with Stumbleupon.com in other circumstances.
Dude I wanted to look up some word and ended up just Urban Dictionary Trolling and Hoping.