Poop on a string

Tonight my youngest dog, a 14 weeks old puppy wanted to lay in my bed with me and my other dog.
He's too tiny to manage to get up by himself so I lifted him. 

After minutes of walking around in bed and trying to play with me and his big brother I saw a piece of poop stuck on a hair which was still stuck in his butt.

So I put the pup back on the floor and went to get some toilette paper and when I came back with the paper I had to hunt him around my bedroom, still with poop-hair hanging out until I tricked him with a toy pig and could get it off.