RE:"Shockwave Propagation Through the Female Posterior"
To a lesser degree, it also occurs while standing.
http://www.youtube.com/watch?feature=endscreen&v=Q5Bu8p-byys&NR=1
Complete thread:
- "Shockwave Propagation Through the Female Posterior" - 
Byron, 
2011-12-11, 08:14 
- Indeed. - JLF, 2011-12-11, 10:17
 - RE:"Shockwave Propagation Through the Female Posterior" - Drago, 2011-12-11, 10:51
 - Newly single, I could enjoy that guilt free. - 
Andrew, 
2011-12-11, 15:12
- Newly single, I could enjoy that guilt free. - 
AkRay, 
2011-12-11, 19:13
- Nope, staying in the lower 48. - Andrew, 2011-12-12, 05:27
 
 
 - Newly single, I could enjoy that guilt free. - 
AkRay, 
2011-12-11, 19:13
 - Barrett. As a matter of fact, yes. - 
cas, 
2011-12-11, 15:30
- Nice..... - 
Byron, 
2011-12-11, 16:13
- Dolly/Ma Deuce. Got it. - 
cas, 
2011-12-11, 16:28
- Dolly/Ma Deuce. Got it. - uncowboy, 2011-12-13, 06:23
 
 
 - Dolly/Ma Deuce. Got it. - 
cas, 
2011-12-11, 16:28
 
 - Nice..... - 
Byron, 
2011-12-11, 16:13