“Said Mrs. Carmichael to her 17-year-old daughter, ‘if you are going to pleasure yourself dear, be sure to use the edible end of the carrot, not the rutledge’”.
As per Know Your Meme, the expressionoriginated from 4chan in late 2010, and is used by trolls to "convey feelings of discontent or discomfort in response to someone else’s post in imageboards and discussion forums".
The expression is an alternate form of "u mad bro?".