A gruesome discovery

A girl was intrigued at the kilt that a Scottsman was wearing, wondering what he would be wearing underneath. "What's underneath your kilt?", she asked him. "Why don't you take a look", he replied. Curiosity overcomming her, she lifted the kilt.

then let it go,"Oh, it's gruesome!" "Well, why don't you take another look, it just grew-some more."