So while fixing some things in my snake's tank, he came out of his little cave and wrapped himself around my wrist like a bracelet. It was not very tight but he had a grip on me, so I took him out and sat in my beanbag. He started doing this weird thing where he would tighten up really tight for a split second and make a sound, sort of sounded like hissing but only about the length of a hiccup. Was he actually hiccupping? He didn't seem agitated because in between these fits he would just stay wrapped and even stick out his tongue. He did this about 2 or 3 times and stopped, what was this strange behavior?