You've pixellated it to avoid revealing that those two are joined at the penis.
(,
Sat 16 Jun 2007, 21:14,
archived)
edit: turns out I meant "2 man saw"
images.google.com/images?hl=en&q=Two-man+saw
(,
Sat 16 Jun 2007, 21:16,
archived)
images.google.com/images?hl=en&q=Two-man+saw