After they can't find anything, there's usually a short silence followed by the question: "Where is the sound coming from?."
Abbaarta sugan ee tixdan ku jirtaa haddaanay wada muuqan karin, waxa aynnu daleed ka arki karaan in Dhoodaan wax ka gadoobnaayeen.  Kuyee, "Caku anigee goormaa Wajaaf laygu soo celiyey....?"