Joe Jonas had to call security when a fan hid behind the curtains in his hotel room. The 35-year-old singer had a “crazy” encounter while in South America when one of his young supporters was smuggled into his room by her mother, who worked at the establishment. Speaking on SiriusXM’s BMP, he said: “I mean, I think the craziest, I just was reminded recently, we were in Chile many years ago. I walked into my hotel room and like the curtain moved and I sat on the couch. “It was like a long travel day. I was like, ‘Huh, maybe it’s air conditioning.’ And then this fan popped up from behind the cur…