'That was a nasty one, what happenned over there?'
'What on earth happened over there?'
'What the heck happened over there?'
'What the devil happened over there?'
'What happened over there, that was terrible!'
'What on earth occurred over there?'
'What the devil occurred over there?'
'What the heck occurred over there?'
'What the hell happened over there?'
'What the hell occurred over there?'
'What in the world happened over there?'