You know how glue is made from animal fat and cartilage boiled down into a sticky substance?
You know how that there aren't as many ponies around as there used to be?
You know how the Xenos are starting to use more glue than ducktape now?
You know why the above two are happening?
*Psst*
"That's where the ponies go. Never. To. Be. Seen. Again."