I've got them all, but I don't know which ones they are. I've got dozens saved over the past couple of weeks. Forget about download helper, you just right click on the area of the video, and hit the "save video as" button. It's as simple as right clicking to save a photo!
Edited to note that I mostly find them here
http://www.vineviewer.co/?search=peeing Just change the last word to whatever search term you'd like. Spaces between words are okay too.