Hidden boundary (2-2)
I believe the answer is:
ha-ha
(Other definitions for ha-ha that I've seen before include "Laugh - ditch acting as fence" , "Loud laugh" , "Park ditch" , "Ditch used by landscapers" , "Sound of laughter" .)
I believe the answer is:
ha-ha
(Other definitions for ha-ha that I've seen before include "Laugh - ditch acting as fence" , "Loud laugh" , "Park ditch" , "Ditch used by landscapers" , "Sound of laughter" .)