Not upside down L. There's more hips control and flexibility than that.
For example:
http://www.youtube.com/watch?v=liUz4k7m_mc
Uhhh... if you don't care about form you can probably learn it from beastskills tutorials:
http://www.beastskills.com/tutorials.htm
If you do care about form.. and caring about form will help you if you ever decide to do some basic gymnastics or take it to the next level like one arm handstand.. then we'll talk later. Just know now that if you want to do this and you learn the "crappy" way then you're going to have problems later.