[My friend once saw something poking out of her cat's bot - she gave it a tweak and quite a long bit of tinsel came out
I can go one better than that !!!!!!!!!!!!!!
When my Son was small he had what was called "peaka" (thats how it was pronounced), he ate strange things.
He ate the carpet on the stairs, plastic, velcro and towels .
He ate the carpet on the top stair so bad that i called the carpet company out and said i didnt know how it had happened, that is must have been a faulty carpet and got it replaced
Anyway,
One day while i was wiping his bum i saw something white hanging out - i pulled it and a whole lot of matted towel threads came out
He was under the hospital for this and thank god he grew out of it