If this is a wind up im disgusted with them, ive seen horses die from colic and to think this a way to have a bit of fun, they seriously need to have a reality check
Hear hear Dancing Queen - get a vet out. It could have eaten some of the plastic wrapping that goes around the haylage, (before the name calling bridage start - yes i have seen a piece hanging out of a horses ass before so it does happen). Good luck, please dont wait until tomorrow.