Found this fantastic gif: Flopping trans cock | Big Cock John
Also check out this video.
Hollyhop | Big Cock John
Whole thing is pretty great, but especially the first 18-19 seconds, and 0:55-2:00.
also, I posted this a while back and never got any responses: can anyone identify and/or post the following clip:
belinha and suzanna the ts - Mr. Skin awards 2010