Funny night in the shop

So this was the scene in my buddies shop tonight my 08 renegade 800x, and two xmrs 13 650 and 15 800 and couple grizzles and a few pints. we were looking over the 650 and found these drain plugs from behind left fender and the were full of oil and plant seeds see pic, I checked the oil and he was 1/4 inch below min fill, I laughed pretty hard seeing all that come out of his bike. I'm a renegade guy what are those hoses behind from fender, why full of oil and how did vegetation haha get in there? Any input from the xmr folks would be great!!