Nealojizm can mean two things
When you see Urbandictionary's word of the day and its great, then you jizz your pants.
or
When you make a word and its positively amazing, so you cant help and jizz your pants due to its greatness.
Bob: Wow, i just got an amazing feeling when i just added this new word ' barbers surprise ' ( http://www.urbandictionary.com/define.php?term=barbers+surprise )
The feeling you experience when, on reconnecting with an old friend/lover on the net (myspace/facebook/classmates/etc), you discover that they appear to have a better career, better sex life, nicer family or more money than you.
"Remember that girl Trish I went out with at school? I got in touch via facebook. Turns out she got into modelling and married a millionaire. I had a serious case of nealousy."