It's the html code you want to post mate, not the
https://youtube.com/watch?v=MzOMogWRIo4 url
You want this.
<object width="425" height="344"><param name="movie" value="https://youtube.com/v/MzOMogWRIo4&hl=en&fs=1"></param><param name="allowFullScreen" value="true"></param><embed src="https://youtube.com/v/MzOMogWRIo4&hl=en&fs=1" type="application/x-shockwave-flash" allowfullscreen="true" width="425" height="344"></embed></object>
This has already been posted recently aswell so expect love from the trolls