The act of using Urban Dictionary to impress the object of your desire by listing their first name with a definition that's somewhere along the lines of:
X is the most amazing girl in the world, she is really pretty and amazing and she was kind to an animal and when she smile it light up all of the world and she would make anyone fall in love with her because she is amazing and I am lucky to know her and I thank god every day for making such an amazing girl and hope please that she on love with me also.
Almost certainly doesn't get these dweebs the sex they think it will.
"Hey X, have a look at this what I have done for you."
"Err...are you UD wooing me you fucking mong?"
"Die. Die now. Kill yourself while I watch and eat these Doritos."